[Warning: Yandere Vampire(s), Disturbing Behavior, and Mature Content Imminent]

*Finn's Age: 18*

Marceline's P.O.V

I can't get the taste of his blood out of my mouth. And, to be honest, I really don't think I want to. Though I stopped needing to feed on blood a long, long time ago, the rich, savory flavor is just too delicious compared to the bland, standard taste of red. It was purely an accident when I bit Finn, and I even apologized to him after the fact, but he wasn't mad at all. The hero was too kind and accepted my apology without question, but I still feel like I should go over and offer to make it up to him. I sort of ran back to my place after what happened.

Sighing and running my hands down my face, I slide down the couch and face the ceiling with a deeply solemn look. Why did I do that? How could it even happen? Ugh! Sitting around here squandering in regret won't solve anything! I should go apologize to Finn again, that way I won't be stuck festering on this feeling all night. Rubbing my eyes, I sit up and float to the door, making sure to lock it before I fly back to the same place I was just at earlier this very day. By the time it enters my field of view, I feel the guilt rising up fast. But I press onward and stop by the door, knocking a couple times and waiting for him to answer.

"Marceline?" He says, frowning in confusion when he comes to answer.

"Can I come in?" I ask politely.

"Sure, please come in" Finn steps aside, letting me float into the treehouse.

I go sit down at the kitchen table, Finn joining me after he picks up a few things.

"Something wrong, Marcy?" The boy asks concerned.

"I just....I can't get it out of my head, Finn" I vent, peering at the bandage on the right side of his neck, "I can't just let it go without saying sorry to you again."

"Mistakes happen, Marceline. And they happen to everyone, including you and me" Finn tells me genuinely, "Don't let them ruin your mood, because I've already had that happen to me before."

"Well, I can I get a hug then?" I ask hesitantly, thinking that that will be a surefire way of helping me move past this feeling.

"Of course you can" He smiles.

The both of us stand up and I feel his arms wrap around me as mine wrap around him. I then bring my face in to rest it on his shoulder, but I end up being too distracted and feel something on my face that doesn't feel like his shirt. Once I actually process where my face is, my eyes widen at the fact that I've now accidentally kissed him! I pull back immediately and face away from him, covering my face in shame.

"Oh my glob, I'm sorry!" I exclaim in complete embarrassment.

"It's not your fault, Marceline" Finn says, trying to be nice.

But I fly away from him and race back to my house, too consumed with shame and confusing thoughts to face him. And though I hear Finn call after me, I don't turn back. I zip through the air, bypassing anything and everything that potentially stands in my way and barge through my front door when I get back to the cave. Quickly locking the door, I hold my head in my hands as I float in one spot and try to make sense of this insanity raging in my brain.

First I bite him on accident, drinking his blood in the process, and it was wrong of me, yet tasted so good that it felt right?! Now I accidentally kiss him too, the thing that only lovers do?! And it was also wrong too since he's my best friend, yet his lips were so soft and delicious. NO! I can't think that! How can I feel that any of my actions are the least bit right? Gritting my teeth, it feels like my sanity is slipping away as my fists rest against the wall. This doesn't make any sense! How does this keep happening?! Does Glob hate me?

In a rash act of desperation, I bang my head against the wall, then fall onto my floor and lie there in pain as my whole body shakes. My head left a puncture in the wall, but before I can begin crying, a sharp and clear realization that seemingly spawns out of nowhere forms in my head to make sense of all the madness. I begin to pick myself up off the ground as these thoughts coalesce. His blood tasted so good because it's not wrong for me to like it. His lips felt so good because it's not wrong for me to like a kiss from him. It's not wrong for me to not just like him, but love him. And it's not wrong to be so in love with him that I want not only his blood and his kisses, but all of him. He's my human and those two acts proved that we're made to be together. Forever. He's the only one who understands me and he's the only one who I desire. I want him to have all of me and I want to have all of him all to myself.

A small, twisted grin appears on my face as I stand up and float again, Finn taking up the entirety of my thoughts. I can't believe it took me so long to realize the depth of my love for him, but now that I have and that Finn's nearing 19, it's already plenty safe for me to want more from my love. I want him to be inside me, to push me up against a wall and claim me like I've claimed him, then take me up, lay me down on my bed, and treat me like a real queen as I let him ravage me to no end as I moan his name. I then look down and see that I have my hand down my pants and that I'm rubbing myself at the thought of him. My underwear and jeans are all wet near my crotch, but it feels so good to do it that I don't stop just yet.

I float up to my bedroom, pulling my jeans down, and kicking them off as I leave my hand over my entrance. I then go over to my closet, open it, and take out one of Finn's shirts that he left here after a sleepover one time. Bringing it closer to my face, I sniff it and am greeted with the sickly sweet smell of Finn, his scent so alluring and intoxicating that I immediately hate the smell of anything else that isn't him. Smothering my face into the shirt, my hand goes back to rubbing myself, my legs and thighs rubbing together instinctively. Unconsciously floating over to my bed, I throw my tank top off and go even further, kissing and licking his shirt as I claim his scent for myself, my fluids leaking onto my sheets as my legs twitch with anticipation. I just can't get enough and even when I'm sent over the edge and cum, lying back and clutching his shirt to my bra-covered chest leaves me with a pleasured sense of longing.

But I need more of him with me before I can work up the courage to tell him how I feel in-person. He'll be too scared of me if he sees me like this, won't he? No, no, he won't. Yes, yes, he loves me back. That's why he was so accepting of me drinking his blood and kissing him. I know it! But he's too shy and sweet and maybe doesn't think that I would love him back if he tried confessing. Oh, Finn, don't worry my adorable, human love. I love you more than anything on Ooo and I'll do anything for you. I'll help you forget about those stupid, worthless princesses and I'll make you immortal so that we won't ever need to leave each other!

Shaking my head, I bring myself back to my main focus, getting more of him. I need more of his clothes and I need more pictures of him. I'll put them all over the walls, on the ceiling, and even by my bed, which will soon be 'our bed'. Even if they're pictures of you with others, I'll cut out those other people and replace them with me, since only you belong with me. It'll be like we're already married! But then an angry realization comes to mind. If I'm to have Finn with me, I have to get rid of everything in this house that even remotely resembles anyone else. Because it'll only be a detriment to our love and I refuse to let anything ruin my Finn and my happiness!

Grabbing the framed photo of Finn and myself next to my bed, I kiss it and hug it to my chest, smiling happily at the thought of many more soon being on the way. I should go see him. You know, watch him while invisible and protect him so that he's safe and happy. Because as long as he's happy, I'm even more happy. But first I need to clear this place of any connections to other people that aren't Finn. I quickly get off my bed, not bothering to put any more clothes on, and start rifling through the contents of the boxes I have under there. I seethe in anger when I find so much stuff from Bubblegum within them, but I then immediately smile when I find one of Finn's hats he used to wear all the time when he was younger. I put the hat on my bed and float over to my closet, rifling through my clothes as well. Pretty much all were fine except for that one t-shirt that was a symbol of me and Bonnie's friendship. It reeks of her and she is a nuisance that has only hurt me and Finn, so it has to go.

I gather up the stuff that needs to be destroyed and head down into the living room again. Nothing there to toss, so I float out the back door with the stuff in my arms and dump all into a pile a good enough distance away from my porch. Since it's now dark out, it's a bit hard to see, but with me being a vampire and naturally nocturnal, it's not as hard to see. I whisper a fire spell under my breath and the pile burns to life, a large bonfire created. I then glance down at the shirt in my hand and clench my fist.

"This is for breaking Finn's heart, you monster" I snarl, tossing the shirt into the fire.

Watching the pile burn puts a smile on my face, but now I'll have to leave it because now is the perfect time for some refurbishing. After all, since Finn is mine, that means this is his home too and I need to make it as comfortable as possible for him to ensure he's happy and that he'll never want to leave once I bring him home. And since it's night, I can steal what I want from the places I need without getting caught. But, if I need to kill anyone, I will. Because if they're going to try to stop me from making Finn happy, that means they're trying to hurt him and I hate them with every fiber of my being.

Leaving the bonfire, I put some clothes on and then fly out of the cave and into the darkness, setting my sights on the Candy Kingdom. I hate to admit it, but their stores are filled with the best of the best, which makes it all the more easy for me to break in due to Bonnibel's incompetent Banana Guards. I merely turn invisible and fly over the wall, going to a paint store first. I'm going to paint my walls with some lovely murals to make it a lot more brighter for Finn. Nobody there, of course, and the door isn't even locked, which makes it even more easy to fly in, nab the paints I want along with a paint brush, and leave. Next is a food store, since I want to be able to make Finn's favorite foods for him. That store, however, is locked, but I'm able to pry open a hatch on the roof and fly in through there. No alarms are set off and I collect multiple bags of food before heading back out into open air. 

Now the last thing for the moment is better furniture and bedding, since the couch downstairs is still too hard and stiff and I don't want Finn hurting himself. Not to mention that my bedding could be a lot softer, making time in bed together much more comfortable. I have to fly a bit before I reach it, the store being farther away from the ones I just visited. Getting in is no issue, for it's another store that isn't locked, but even after I grab some soft sheets, finding the right couch isn't easy, especially since they're all bright colored. I look around a bit, but find nothing suitable, then looking in the back and finding a completely new dark red couch, that being just the one I want. Using my vampire strength, I push the couch out the back door, set the other supply bags on the cushions, then pick it up and fly back home.

Once I'm home, I get to work. I toss out the old couch, it going into the bonfire as well since I'm not in the mood to cart it somewhere else at the moment, replacing the old sheets with the new sheets as they get burned too, and putting all the food in the fridge. I quickly make a note that I'll probably need to get a bigger fridge at some point here too. I leave the paint cans on the table in the living room, saving it for either tomorrow or the day after. I briefly test out the new couch and sigh at how comfortable it is, just knowing that he'll love it. I then float upstairs and run my hands over the sheets and comforter, sighing again at how soft they feel. I decide to call it a day there, stripping all of my clothes off and getting under the covers. I hug a pillow that I have Finn's shirt on it and a picture of his face stapled onto the top, giving his face a loving kiss before I hold the pillow snugly to my chest, venturing off into my dreams that I know will be of him.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I wake quickly the following morning, eating just enough red to tide me over as I then quickly set out for Finn's place. I need to get some things from his place and bring them back and I want to see him. My love's treehouse is quickly within my sights and I can't wait to see him. I smile joyfully fly faster, pushing through the front door when I'm there and floating up the ladder until I enter Finn's bedroom. He's laying on his side facing me and I feel all mushy and warm inside at how cute his peaceful, sleeping face looks. I float over and set down next to him, leaning in close to be near him. I stroke his hair and hear him mumble something in his sleep, staring at him lovingly. Then I lean in an ever so gently place my lips over his. Oh, I missed this! But I can't stay this way for very long, since I might lose control of myself and take him right now and he might wake up. But the thought of him catching me makes me even more excited. Nevertheless, I pull back, lingering on his bottom lip for a second before looking around to see what I can collect for him.

I find a lot of shirts and even more photos, many of them being of Finn with someone else, but I'll tear them up so that it's just Finn when I get back. I give each of the shirts a sniff, getting wet at how good he smells when his clothes at pressed up against me. But when I hear someone coming up the ladder, I panic and hide the clothes and pictures under Finn's bed, floating over to a corner to prevent getting run into and revealed. It's Jake who comes up the ladder, a box in hand, and he comes over and wakes up Finn.

"Hey, bro, check out what I found by the front door!" The dog says excitedly, Finn cutely rubbing the sleep out of his eyes before he quickly gets excited too.

"A gift?!" He exclaims, his excitement making me smile happily, "Who's it from?"

"I don't know, man! I wanted you to open it!" Jake says, handing the box to Finn.

"Thanks, man!" My love replies enthusiastically, lifting the lid off the present, "Hot dog! It's a plate of fresh cookies with a note!"

"Score, man! What does the note say?" Jake asks.

"It says: 'Dear Finn, I baked these for you as an expression of my undying love for you. I love you more than anything. Enjoy and don't forget that I love you. I hope we meet soon. Love, your future wife'" Finn reads, the note making me all mushy inside at the fact that he read it and is probably thinking of me.

"Aww, that's sweet" Jake comments, Finn nodding and smiling as he eats one of the cookies, tears of happiness almost coming out of my eyes, "FP's really is a loving girl."

My smile drops in a second after hearing her name, my heart going cold at the misinterpretation. Sure, I didn't make those cookies for him, even though I should've, but he was supposed to think of me! Not Flame Princess!!! That fire elemental girl has ruined this moment! She has her hooks in him, even though he's mine! The thought of her touching him, hugging him, and even kissing him makes me want to put my hands around her throat and I squeeze the life out of her. I so desperately want to do it, but now's not the right time. I need to get these clothes back to our home so that it'll be prepared for him...and I might hug them close and think of him in bed too. 

Once Jake and my love get up and leave his bedroom, I gather up what I hid under his bed and fly out through the window after pushing it open. The thought of that flame tramp potentially stripping and seducing Finn before pressuring him into having sex with her plagues my mind and I hate her even more. I can't let it happen. I won't let her ruin him. I fly home quickly and slam the door closed, not even bothering to lock it as I rush up to our room. I dump the clothes on the bed and collect all the pictures. Seeing this as a way to vent out my anger, I get to work cutting the pictures up and throwing away any pieces that aren't of Finn. I then take the ones that are of Finn and staple them in almost every place I can put them on my walls and ceiling. And, just to make me a tiny bit happier, I put some photos of myself next to some of his, fixing the pictures so that they're now accurate.

I then go back to his shirts and just toss them everywhere on the floor in here, in my bathroom, and down in the living room, ensuring that his scent will be everywhere in our house. I spin around in a circle, taking in all his shirts and the pictures everywhere, and feel all bubbly and giddy inside, my whole body shaking. Today could not be anymore perfect. At least it would be if someone who clearly isn't Finn, since I hate any scent that isn't his and can smell them clearly, didn't ruin the moment by knocking on my door. I grit my teeth and float downstairs, going to the door and opening it.

I'm then caught off guard by some gas being sprayed at me and chains getting wrapped around me before a bag goes over my head. I thrash and fight against this attempt at a kidnapping, but it's no use and I get carted off after being picked up by two sets of arms. I don't give up my struggle and continue fighting until they put me down, which isn't for another 10 minutes. But when whoever it is removes the bag, I look around at my surroundings and grit my teeth even harder at who I see. Bonnibel Bubblegum stands in front of me with a stern expression on her face and her arms crossed, two Banana Guards keeping me restrained as I kneel in a compromised position in Bonnibel's lab.

"Let me go right this instant, Bonnie!" I growl at her, "You have no right to be doing this to me!"

"I have every right" She replies calmly, crossing her arms and the Banana Guards get a better grip on my restraints, "I've been monitoring your behavior with my nano cams that I've placed all over Ooo. And ever since the incidents you had with Finn, needless to say, it has downspiralled into being totally disgusting and completely insane. So, by kingdom law, I'm placing you under arrest for crimes against Ooo and its hero."

"What?" I state furiously.

"I'm sorry, Marceline, but I'm going to have to lock you up" Bonnie says, angering me further, "You've become too dangerous to just roam around freely. You've crossed so many moral and ethical boundaries with your obsessive and perverted acts at the thought of Finn that your mental state is deteriorating rapidly. If I don't detain you now, there's no telling what you'll do next."

"It's like I thought" I snap at her, thrashing against the restraints, "You're trying to keep me away from him. You're trying to take him away from me. You're a homewrecker that wants to steal my love from me and keep him for your own filthy, evil desires!"

"Banana Guards, take her away!" She orders.

And once she says those words, something inside me snaps. Any restraint I had on killing anyone without question disappears and I explode. Screaming loudly, I transform into a huge black monster, shattering the restraints and crushing the Banana Guards before returning to my regular form. My head hangs low, but when I look up at Bonnie, who's now terrified, my eyes are dark red.

"You've always been a whore, Bonnie" I spit venomously at her, her eyes widening at my words as I slowly float towards her, "Kissing any good looking person that tries their hardest for you. I bet if I wasn't here, you'd have opened your legs for Finn years ago. But that'll never happen. You'll never take my love away from me. Because he's mine and nobody can him!"

"M-Marceline, please take it easy" Bubblegum stutters, looking the most afraid I've ever seen her.

"NO!" I yell at her, the princess freezing and tensing up.

"Your lies and manipulation are over. Now you die!" I grit my teeth, lunging forward at her.

She's too paralyzed by fear to react, not putting up any defense as I morph my hand into a werewolf claw and punch through her body. Bonnie lets out a pained gasp and reaches for me as I pull my hand back out, it going back to normal, and dig my nails into her face. I hold her head with both hands as she attempts to pry herself from my grip, but I shut her up by slamming her head into her whiteboard over and over and over again until she can't fight back anymore. Weakly, Bonnie pleads for me to stop, but I don't give any mercy to the slut, clutching her throat and squeezing tightly. Shaking with rage, I squeeze harder and harder, hearing things cracking and snapping before I jerk her backwards and hear her neck snap. I then angrily throw her body to the ground and watch as it rolls to a stop with her eyes staring glazed over at the ceiling.

Panting heavily, I look down at my shaking hands and close them into fists, reveling in the invigorating thrill of ending her life. She had to go, she just had to. And now all the other princesses will have to go too. Some have touched Finn, looked at him flirtatiously, and others have even tried kissing him. They'll all die very slowly and painfully as I tear their limbs off and rip them to pieces. They're all the same and their fate will be the same too. They will die, their kingdoms will fall, chaos will ensue, but in the end, all of those obstacles will be gone forever and that means Finn and I can be together without anybody trying to corrupt him, seduce him, or poison him against me. We'll be happy lovers and we'll be bonded for eternity.

But only after all the princesses are dead.

Finn's P.O.V

I'm worried about Marceline. Ever since she ran away from my house yesterday, I've been wondering if she needs help, but Jake's suggested that I give her time. I hope he's right because I'd hate to think that I could be there for her and wouldn't even know if she needed me or not. But I think that despite Jake's advice, I'm going to either call her or go visit her after I pay a visit to my girlfriend Flame Princess. She called just a bit ago and wanted me to come over and I could hear it in her tone that it was urgent. So, with my backpack on and my sword handy, I head towards the door.

"I'm going out, Jake. I'll see you later!" I call back to him.

"You have fun with your girl, you hear?" My brother calls back.

"I will" I answer, pushing the door open and going outside.

In my other hand, I hold some flaming flowers, though they don't hurt me because of the fire protection amulet I'm wearing. I take off at a run towards Phoebe's old house, her wanting to meet there instead of the Fire Kingdom. I'm a bit confused as to why she'd want to meet there, but hey, it's not my place to judge.

"Knock, knock" I announce, Phoebe looking over and smiling when she sees me, "Someone call for a hero?"

Flame Princess gets off her bed and rushes over to me, enveloping me in a hug and a kiss. I kiss her back, handing her the flowers before closing the window. Phoebe places them in a vase before taking my hand and guiding me over to the bed. My first thought is that she wants Tier 15, but when she has me sit down next to her with a grave expression on her face, I quickly realize that's not the case.

"The princesses are dead, Finn. All of them, even Bubblegum" She tells me, my eyes widening, "Nobody knows who's behind it or what their reasons are, but I'm the last princess in Ooo that hasn't been killed. I'm scared, Finn. I don't want to die."

"I won't let it happen" I state confidently, holding her hands, "I'll keep you safe, Phoebe, you have my word."

"Thank you, Finn. I love you" Flame Princess smiles happily.

"I wonder if Marceline's ok. She's technically royalty too, so whoever it is could be after her as well. If we can band together, we probably stop the killer" I think out loud, Phoebe nodding as I then pull out my phone, "I'm gonna try calling her."

I ring her number and she miraculously answers on the first try.

"Marceline, is that you?" I ask worried.

"Finn! So nice to hear from you!" The vampire replies overjoyed.

"Have you heard about the killer that's assassinated the princesses? Because I'm worried that you and Flame Princess are next" I tell her.

"Yeah, I have. It's terrible news. But I'm glad you're doing ok" Marcy answers.

"We should probably stick together. I'm at Phoebe's old house with her right now. Can you make it here so that we can then find someplace to hide together?" I ask.

"I'll be right over" She replies, her voice sounding a bit odd, "I'll see you soon, Finn~."

Our conversation ends there as I then put my phone away and rejoin Flame Princess. She's trembling in fear, but I take her hands and lightly kiss each of them to calm her.

"If things go bad, just remember that, no matter what happens, I'll never stop thinking about you" I tell her earnestly.

"Thanks, Finn" She smiles.

But then, out of nowhere, she's yanked off the bed and onto the floor by some unforeseen force. And then I'm knocked off the bed, somersaulting backwards and hitting my head against the wall. Flame Princess tries to get up, but she's then sent flying through the window. It must be the killer! And no wonder nobody's been able to see him. They literally can't since he's invisible! I pull my sword and point it forward, not sure where he's going to strike from as I stand and begin swinging it in a defensive manner around myself. But no attacks come, until I go to the window to see if Flame Princess is ok and am promptly tossed through it myself. I try to recover quickly, getting up right as the entire house gets lifted off the ground and thrown right at Phoebe. She manages to dodge it, the house falling into the small ravine below and breaking apart, while my girlfriend creates fireballs in her hands.

"Show yourself, you coward!" She states angrily.

I run to stand by her side, but the killer grabs me by the back of my shirt, dragging me away from her to separate us. Phoebe has a shot to hit him, but is afraid of hitting me too, despite the fact that the fireballs wouldn't hurt me. I'm then dropped and the killer goes for Flame Princess, but knocks me down again when I try to stand back up, my head hitting a large rock. I'm now dazed and still try to stand, but it's hard for me to keep my vision focused. I crawl towards Phoebe, the killer going right for her as my girlfriend gets punched upside her head and from all other directions, getting tossed into the air a few times too. I wish Marceline could get here soon, because we're losing badly.

Then the worst thing yet happens. Phoebe is sent off the cliff into the ravine, the killer apparently going with her. I struggle to stand and stumble my way over to the edge, collapsing and looking over. My heart breaks when I see Flame Princess getting her head smashed against a rock over and over again until her forehead gem has many cracks in it. It breaks even more when the killer shoves her head underwater, the water hurting her immensely. She's kept there in extreme pain until she's dead, her entire form evaporating into steam and dissipating. I feel tears come to my eyes, but also feel my body turn over and give up, my conscious fading away into blackness.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I somehow regain consciousness some time later, even though I thought I would surely be dead. But the memory of what happens resurfaces as well, grief rising in me as I go to take in my surroundings. I'm almost completely without clothes, except for my boxers. I'm laying in a, admittedly, really comfortable bed that's making it hard to want to leave it, and there's a....topless Marceline sleeping next to me. My face flushes when I see her, her boobs on nearly full display as her chest rises and falls with each passing breath. I'm so confused and am beginning to develop quite a list of questions, but when I look back at the vampire a second time, her eyes are open and gazing back at mine.

"You're awake" She smiles, sitting up and letting the comforter slip off her.

That's when I realize that she's naked. Now her smooth stomach, curvy thighs, and sleek legs are on display. Not to mention the slit between her legs, but all of this together is just making me blush really red. I had technically seen her naked before during that 'hiding in her closet' accident some years ago and ashamedly admitted that I was turned on by what I saw. But now that I'm see her without any clothes on again and much closer to me as to where I can see every detail is just much harder for me not to get aroused. No, Finn, you can't. Flame Princess. She's...gone. But she wouldn't like it if she saw in bed with another woman. Marceline, however, notices me checking her out and smiles victoriously.

"Mmm, someone's happy to see me like this" She grins, looking down at my pitched tent in my boxers, "Aww, is that for me, Finn? You shouldn't have."

"Marceline, what's going on? Why are you naked?" I ask, trying not to stare.

"Finn, I'm sorry for not reaching you in time" Marcy says, her tone now solemn and serious as she sits back on her legs, "By the time I got there, I found you unconscious on the cliff and Flame Princess nowhere to be found. I had to hide you away fast so that the killer wouldn't get you too, so I brought you back here and put you in my bed. Though now, it's yours too."

"What do you mean by that? And that doesn't answer my question" I reply, Marceline moving even closer to me so that our faces are only inches away from each other.

"I'm sorry that you lost her, Finn. I've lost people I've cared about too, but given how much she cared for you, it's hard for me to imagine" The vampire says sympathetically, lifting my chin up when I hang my head, "But you don't have to be sad, Finn. Because I care for you a lot too. Probably even more than Flame Princess did. And to show you how much I care, I wanted to show you something that you've never seen before."

"And what's that?" I ask.

"Tier 15" She says, her voice going lower as she sits on my pelvis.

"Marcel-" I begin to say, unsure if we should be doing this before she puts a finger to my lips. 

"I'll be her replacement, if you really do want me, Finn. I'll be even better than her too" Marceline almost whispers, gently rubbing my face with the back of her hand, "So, will you let me be your girl, Finn?"

| Lemon Start |

My old crush on Marceline has reawakened, partly due to her being willingly naked in front of me and partially because I want someone to love now that Flame Princess is gone.

"Yes" I nod.

Marcy then connects our lips together, wrapping her arms around my neck as she lays us down on the bed. My hands can't help themselves and feel down her sides before gently finding a home at her butt, tenderly clenching them as Marcy keeps kissing me. But I then feel her hands reach down and grab mine, her briefly breaking our kiss to guide my hands onto her breasts.

"They're all yours now, Finn~. Play with them as much as you want and do anything you'd like to them~" She grins seductively.

My heart is beating faster than usual and my raging emotions are making me wonder how soft they are. So, after she lets go of my hands, I fondle both of her breasts and squish them around, them feeling even softer than I thought. Marcy exhales in pleasure, but feeling them isn't the only thing my mind is telling me to do with them. I soon lean forward and begin kissing them all over.

"Oh, Finn~!" She gasps, instinctively keeping my face pressed against her breasts, "You're too good at this~!"

I feel a spot on my boxers getting wet, meaning that Marceline is really enjoying this, especially when I kiss her nipples. But she's quickly getting needy, her bringing my lips away from her chest so that she can kiss me again, this time even more passionately than the last. She then goes to kiss all over my face and then works her way down my neck, dragging her fangs lightly across my skin. It actually makes me shiver in excitement and my mind is starting to go hazy as to where I begin to act in a way that I would never typically act.

I flip Marceline over so that she's on the bottom with her and back against the bed's headboard. She giggles excitedly at this, but gets shut up with a kiss from me before I kiss down her face, neck, and chest, going between her breasts this. I then keep going downward as I kiss over her stomach, thigh, and leg, but I then stop and start kissing back up her leg, but on the inner part of her leg. Marceline's breathing increases and her legs open up instinctively, revealing her womanhood, which Jake said is typically called a 'pussy', now wet. My heart is beating even faster now and my cheeks are burning hot at the thought of doing it and Marceline's plea sends me over the edge.

"Please, Finn. Lick me~" She pleads wantingly.

I do as she asks and dive in, licking at the slit and immediately liking the sweet taste of it. Marceline's legs twitch and shift as I lick her, Marceline herself turning into a mess of moans and pleas of not stopping. But when some juices spray out of her, I stop and give her a moment to rest, the vampire having laid back to ease her panting. But it's only for a moment and she's back up, her hands anxiously bringing my boxers down so that my...boy part is free.

"Ready for Tier 15~?" Marcy asks.

I nod and Marcy flips us around so that she's on top again. She then lowers herself down so that my thing enters her pussy, it getting swallowed up within her body. I then unconsciously begin thrusting into her, Marceline looking surprised that I knew what to. But she only grins and sighs in satisfaction as I continue to pound her entrance with my hands greedily clenching her thighs. Marcy then does something unexpected and leans towards my neck, biting down with her fangs and going to suck my blood. It actually doesn't feel too bad and it seems to turn her on even more. She keeps drinking me as her breasts bounce with every thrust I give her, Marcy only retracting her mouth once she's had her fill, her fangs dripping and her mouth having red over it. And, believe it or not, it's actually turning me on even more too.

"Ugh~! Oh, you're so good~!" She groans, "Oh, I love you, Finn~!"

I feel something building up in my member and it's throbbing so much that I'm too late to give her any notice before a stream of something gets released inside her. We both exhale around the same time, but even after I've done that, Marcy still wants more. She spreads her opening with her fingers in an attempt to make me go deeper inside her and then has me keep going.

"Ugh, Flame Princess could never pleasure you like I can~!" The vampire exclaims, "I bet you love this body even more than hers~!"

"You're so tight, Marceline~!" I groan, her mention of Flame Princess out of the blue being rather odd.

"Ugh~! Yeah, I made her die~! Just like all the others~!" Marceline groans in pleasure.

| Lemon End |

"Wait, what?" I state, her words hitting me like a ton of bricks and completely killing my mood.

"It's true! They're all dead because I killed them" She groans some more, but I pull out of her.

"You? You killed Flame Princess?! You killed my girlfriend?!" I exclaim in anger.

"Yes, I did. But I'm your girlfriend now, Finn. Not her. She had to die, Finn. She had to" Marceline says calmly, her gently crawling towards me as I begin to back away from her, "She would've only hurt you if you continued being with her. But she didn't love you. None of those tramps loved you as much as I do, because I really love you."

"Why, Marceline?! Why?! What happened to you?" I say exasperated.

"I woke up, Finn" The vampire purrs, climbing onto my lap as I hit the headboard, "I realized that I loved you more than anything in this land and that I would do anything for you. I would even kill for you so that we could be together forever and ever and be eternally happy. I couldn't stop thinking about you, so much so that I had to have you nearby even if you weren't here with me."

I then look around in horror at all the pictures she has of me stapled to her walls and ceiling, some of them being cut up with her being placed in the pictures next to me. I also see a pile of my shirts that look like they've been sniffed repeatedly. Now I truly realize just how sick Marceline is.

"Those princesses had to die, Finn. They were obstacles that were in the way of our love and would've taken you away from me. But now they're gone forever, leaving just you and me. Just the way I want it" Marceline smiles, going in for a kiss.

I push her off me and roll off the bed, pulling my boxers up as I look to the trapdoor to escape.

"Finn, what are you doing?" Marcy asks, sounding sad and confused, "Don't go!"

I jump down through the trap door and roll when I hit the floor. I look around and see that the couch is new, my favorite foods are on the table, and colorful murals of my favorite places have been painted on the walls. Did she really do all of this for me? Should I be freaked out or appreciative? I don't know.

"I did all of this for you, Finn" Marceline continues, me turning around and seeing her float down into the living room before she comes close and tenderly grabs my arm, "I want you to be happy, safe, and loved and this is only the start of what I'm willing to do. Don't you see, Finn? I'm willing to give you a perfect life that we can share together. And it's all because my love for you runs deeper than anything."

I turn to leave, breaking free of her grip as I give her no reply and walk towards the door.

"Don't leave me, Finn! Please! Don't abandon me like everyone has!" Marceline cries out.

I pause, her words hitting me hard. My hand reaches for the door knob, but I stop and turn back to Marceline. She's sobbing on the floor on her hands and knees. I'm scared of her and think she's completely lost her mind after she admitted to murdering Flame Princess and all the other royals, but when I look at her now, I see a sad, lonely, girl that just wants to be loved and could never find any. Her change in personality is frightening, but I don't feel like I can really leave her. As a hero, it's my responsibility to help her and with enough time, maybe I can get her to become good again and not be so quick to kill incessantly. Besides, aside from that, it would be wrong of me to hurt someone who cares for me as much as she does. Kneeling in front of her, I gently touch her head, Marceline looking up at me.

"Finn?" She says, tears still streaming down her face.

"Marceline..." I sigh, choosing my words carefully, ".......I'm not going to abandon you. I would never do that. But this senseless killing isn't ok. It's not the radical dame that I've known for the past five or six years. Marcy, please. If you truly do want to make me happy, then please don't do it anymore."

Marceline sits up on her knees and places her hands on the sides of my face, looking directly at me as her crying slowly subsides.

"I will, Finn. Just please don't leave me" She cries.

I nod and she kisses me once again before lightly tackling me to the ground, hugging and kissing me more as she wraps herself around me with happy tears flowing from her eyes.

"I love you, Finn! I love you, I love you, I love you!" Marcy professes passionately.

She then rests her forehead against mine and takes my hand, bringing it up and placing it on her stomach.

"And I'm sure our child will love you too, though not as much I always will" Marcy smiles.

3,000 Years Later...

I wake up in bed, Marceline wrapped around me naked with her legs tangled in mine, her arms clutching my waist, and her head nestled into my neck. Even though I know I slept well, I still feel tired. I rub the back of her head, Marcy smiling and nestling further into my neck as I look to get out of bed. But it's then when I notice five of our daughters, Madeline, Evey, Avril, Lorelei, and Isabella, standing next to our bed watching us. Though they often like to argue to the other girls about it, they claim to be 'my favorites', even though I love all my children equally. They're all the ones that Marcy and I most often found wanting to platonically sleep in our bed with us just because they miss us.

"Finn, can you sit by me at breakfast?" Isabella asks, her and her sisters never calling me 'Dad'.

"Finn, can we go with you to the market today?" Madeline also asks.

"Finn, can you play with me when we come back? Please?" Lorelei pleads, pouting cutely.

I smile, them being as needy for my attention as ever. You'd think after so many years that they'd want to move out and away from us like any other kids do, but nope, they haven't ever expressed any desire to leave. And I guess I can't blame them. Ever since Marceline and I began having frequent sex, we needed a bigger house. So, after our first five kids were born and all of them reached the age of 16, we worked together to turn the small house into a massive, multi-story mansion inside the cave. It's sleek, fancy, and probably one of the last cool things in Ooo.

"Ugh, I think I want us to just spend today in bed" Marceline mumbles, shifting herself on top of me.

"But, Mom! You said that we could go with Finn today!" Isabella protests.

Marcy then opens her eyes and wakes up enough to see that our daughters are in the room with us.

"Aww, of course you can, sweetie" Marceline answers kindly, "But I can only allow you, Lorelei, and Madeline to go. If your sisters found out I let all of you go, they'd want to join in as well."

"But, Mom!" Evey protests.

"It's ok, Evey, you'll have your time with Finn too. Don't worry" Marcy reassures her, then looking at all five in turn, "Could you please give us some privacy for a minute, girls? I need to change."

The girls indeed leave and Marceline yawns, sitting up and letting the sheet fall off her body as she sits comfortably on my stomach.

"Those girls. Always wanting your attention just like I do" Marcy chuckles, leaning in close to my face, "But your always and forever my number one, Finn."

She kisses me and holds me close, to which I reciprocate and hold her too as we briefly make out, her not letting me go easy when draws to an end. Marcy then floats off me and goes to grab her clothes off the floor, her having just thrown them there before getting into bed last night. I let her change and leave the room to head into the dining room, not bothering to check my daughter's bedrooms to see if they're still sleeping, playing video games, or playing music since I know they're already waiting for me there. Harley especially on that last one because she grew up really liking music and Marceline taught her to play her bass.

When I walk into our large dining room, all of my daughters are sitting at their spots at the family table. And when I get closer to the table, all of them turn to me with happy smiles on their faces. Aside from Isabella, Madeline, Evey, Avril, and Lorelei, there's also Harley, Nathalia, Olivia, Aurora, Lilith, Maeve, Daphne, Iris, Lux, Chloe, Luna, Astri, Rubi, Lulu, Amara, Evelyn, Bela, Dulcie, May, Eden, Magnolia, and Scarlett. Yep, I have 27 daughters. But the bad news is that they're all just like Marceline, possessive, overprotective, and obsessed with keeping me close to them. I remember a couple of times when I felt sick and they all crowded around my bed and cried alongside Marceline as they promised to do everything and anything to make me feel better. The only difference is that Marcy is a lot more sexual in her approaches while my daughters take after their mother on how violent she can be towards others that she thinks are trying to steal me away from her. So, yeah, my plan to stop her from killing didn't really work out and, in fact, took an even worse turn since now our kids have been taught it too. What's weird, though, is that they all, physically, look the same age as me and are pretty much as tall as me too, even though I still have lots of years on them. Per their request, Marceline made them all immortal when they turned 16, 17, and 18, that way they'd be able to be around me forever too.

"Come sit with us, Finn!" Lux calls.

"Yes, come sit with us!" Eden pleads.

"I'm afraid I can't just yet. I need to head into town to get us some more food" I tell them, much to their sad, disappointed faces.

"Can I go with you, then?" Lilith asks.

"I want to go too!" Chloe insists.

"I do too!" Harley protests.

"Now, now, girls, I've already decided that Lorelei, Madeline, and Isabella get to go with Finn" Marceline tells them, floating into the room as the girls all groan in complaint.

"No fair! Why does Maddy, Izzy, and Lori get to go?" Lulu pouts, looking like she's going to cry.

"Aw, don't be sad, Lulu" I console her, my daughter turning and hugging me when I walk up to her chair, "I'll spend some time with you later today, ok?"

"Thanks, Finn. I love you" Lulu smiles happily.

"I love you too, sweetie" I smile, gently rubbing the top of her head before I address my other daughters, "The rest of you, please listen to your mother while I'm gone."

They all agree without question, but plead for me to come back soon since they'll miss me. Madeline, Isabella, Lorelei, and I then head down the stairs to the entryway and leave the house. Though Marcy wanted to remove the front door like in her old house to keep me from leaving, the girls insisted, and through them, I got more freedom, though perhaps it was just Marceline being confident that they would be able to protect me wherever I went so she became fine with letting me go out. As we leave the cave and head out into Ooo, I look around at everything to remind myself of how much has changed these past 3,000 years. The Candy Kingdom, Fire Kingdom, and all others fell without the princesses and new kingdoms rose after a long period of chaos. But then they fell too after my daughters killed the new princesses due to the thought that they'd steal me away from them. And the cycle continued pretty much like that, rising, falling kingdoms, chaos, and violence. But each and every time, there's been a sustainable market system where food and supplies have persevered. That same marketplace is where the girls and I am heading right now. 

By the time we get there, it's plenty busy, stands and shops filled with people eager to buy things. We've been here numerous times already, so the girls and I have no trouble finding our way around. We visit about five stalls to get what we need and all goes smooth until the last one. It's a young woman, which is something that Marceline and my daughters despise when it comes to them being anywhere near me, and she's acting pretty nice towards us, giving us the milk, tomato juice, and orange juice we need without much hassle. But I could see that Madeline, Isabella, and Lorelei were hating her more and more with each passing second. And what pushed them over the edge was the nice parting words the lady gave me after I was done paying.

"What do you think your doing flirting with him?!" Madeline demands, catching the shopkeeper off guard.

"What?" She asks, confused, "But, I wasn't-"

"Yes you were!" Isabella yells at her, shutting her up, "You were trying to flirt with him, you whore!"

"And that means you were trying to take him away from us" Lorelei glares at her evilly, morphing her hand into a demonic claw, "And the punishment for that is...death."

Her and her sisters then lunge at the young woman, throwing themselves over the counter as they attack her relentlessly, screaming and slicing at her. I stand by and look the other way, not wanting to watch their brutality. Isabella, Madeline, and Lorelei scream and curse at her non-stop, though we're not given any weird looks since it's already pretty loud in this place anyway. They finish quickly, then hopping back over the counter with blood splattered on their clothes as I turn back around. All three hug me, asking me if I'm ok and if she did anything to me, to which I said no. They're happy with that answer and we all leave back home. But when we get back inside and walk back upstairs to the dining room, Marcy notices the blood on her daughter's clothes, her working on pancakes with Bela and Chloe as I bring the groceries over.

"What happened, girls?" Marcy asks, looking concerned as she pauses her cooking.

"Some whore at the market was hitting on Finn" Isabella says, Marcy instinctively stabbing a knife into a nearby cutting board as my 24 other daughters all develop angry, red, glowing eyes, "But we taught her a lesson and killed her."

"Excellent work, Isabella. I'm very proud of you and your sisters" Marcy smiles, her and the other's anger level dissipating immediately after hearing the second part, "Why don't you bring Finn to his spot at the table and we can eat breakfast?"

Following their mother's suggestion, Lorelei, Madeline, and Isabella guide me over to my seat at the table before going to sit at their own spots. Marceline then comes over and serves up breakfast to all of us, but gives me mine first. Once she's done, she comes and sits on my lap, her arms around my neck. Seeing her gaze so lovingly at me and seeing how happy my daughters are to have me here with them, I guess I can say that even though they have their...quirks, I'm happy to have them in my life and wouldn't give them up for anything in the world.