Author-Chan's notes
•I miss Halloween so I'm writing this fic mostly since I want spoopy season to come around already. Especially with the virus and all, so this is based in the normal AOT time but they have holidays•
P.s.- I'm making this Erwin x Reader since I love and hate, hate fics like I did for the last one so this is to make up for it. Enjoy ^-^

(Y/n) POV

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"(Y/n) Erwin said he needed you for something, let's hope he doesn't take your day off for Halloween."
Hanji said as I finished a paper correcting some of her formulas for certain medications and some explosives.
"Alright, we aren't doing anything for Halloween though correct?"
"Actually I think we're having a party, I was told by Pixis that we are going to."
"Fuck alright, now I really hope Erwin doesn't take my Halloween."
Halloween was on a Friday night this year for us so we were able to get the weekend off completely.
Even the Captains and Corporals were taking the day off which was a rare occasion to say the least, being a captain had its perks but the lack of days off definitely sucked.
"I'll go with him in a minute, I'll finish this when I come back, don't mess with it please."
Hanji nodded knowing how much I hated leaving work unfinished.
"So what are you going to be for the Halloween party then?"
She questioned me looking very joyful now that she was talking about it.
"Probably some lewd skeleton, I figure why not dress lewd for one day of the year."
I giggled finally finishing the paper and looking up at Hanji, she was blushing red and I wasn't sure why.
"Are you alright?"
"I'm fine! We need to get ready together though! We can match costumes!!"
"Alright that's fine with me, the party is tonight then so I'm sure we'll have time."
I stood up and walked past a bouncing Hanji, she definitely loved Halloween.
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*knock**knock*
"It's (y/n) you said you needed me for something Corporal."
"Come in."
I opened the door to see his clean office, it definitely wasn't as clean as Levi's or as messy as Hanji's but it was decent.
I sat down on a black leather chair he had in his room while he sat behind his desk sorting papers.
"You know the Halloween party is tonight?"
He asked me and I tilted my head looking confused at him.
"Yes I do, what about it?"
I questioned as he finally looked up from his papers.
"I'll need you to stay with me for the night, we may still drink but we can't get fully black out drunk. Levi already agreed that if either of us gets black out for whatever reason, he would take over. But I would like to ask you to help me with keeping the cadets safe during the party."
"So we're babysitting?"
"That's a rather rash way to put it but yes, again I am glad that Levi doesn't drink for once."
He chuckled as I joined him giggling, I was pretty close with the commander so I didn't mind spending my night with him.
"I do have one question though."
"What is it?"
"My costume I'm planning to wear is fairly lewd, I just wanted to ask if that was alright."
"It's fine but nothing too lewd alright? The other regimes will be there so I can already assume they'll be gawking at you regardless."
He sounded calm but a hint of venom laced his tone.
"It's nothing too bad, I wouldn't show up naked or anything."
I giggled as he just smiled back at me.
"I have to help Hanji with some of the formulas for explosives again, she messed up the measurements before so I was correcting them. The party starts after dinner correct?"
"You are correct, I'll see you then."
I nodded at him as I opened the door to get back down to Hanji's lab.
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Both Hanji and I had left early from dinner to go get ready, I found it interesting that Hanji wanted to dress at all lewd. She never really did anything to be even mildly seductive.
We made our way down to the lab and I noticed our costumes were on the bed, it was a black strapless bodysuit, fishnets, fingerless gloves, white eye contacts, black heels, and some white and black face paint.
(Shown in cover)
"(Y/n) this is going to be so much fun!!"
She said as she stripped off her uniform and pulled on the bodysuit and fishnets, I did the same and looked in the mirror seeing how different we both looked from when we were wearing our uniforms.
I applied the face paint on myself then I went over to Hanji who was relaxing watching me apply it.
I applied it to her face when I noticed she had showered, she almost never does cause she gets so caught up in her work.
"Hanji you want to leave your hair down? And the contacts I got are prescription so you don't need your glasses."
I suggested as she sighed looking at me but was smiling.
"For you (y/n) I will, just for the night."
I giggled and smiled brightly at her, she looked so different with her hair down and her glasses off.
I put in my contacts as I finished her makeup, then she did the same and we both looked in the mirror.
We both looked incredibly different, Hanji could pass for royalty and I would like to think I could too.
"We look amazing!!"
Hanji practically yelled as she bounced with joy, she almost fell due to the heels but being honest ODM gear was a lot harder to balance on.
"Let's head down, I believe the party has already started."
I heard the music playing from the cellar which gave me the hint that the other regimes had arrived and the party was starting.
-
We made it down to the cellar and saw almost everyone drinking and dancing.
Eren was a mummy, Mikasa was a cat, Armin was a pirate, Ymir was a vampire, Christa was an angel, and to my surprise I saw Levi and Erwin.
Levi was a 'zombie' aka he just had fake blood on his face.
Erwin was a murder victim he had a fake gunshot on his chest, I noticed this since he was completely shirtless other a black blazer and some suit pants.
Everyone turned to look at us as we walked down the stairs, it was insane the amount of red faces and some of the bloody noses I saw happening.
"(Y/n), Hanji, you both look stunning."
Erwin said kissing my hand and nodding at Hanji, they were never very good at being formal with each other.
"Tch that's Shittyglasses?"
Levi scoffed looking at Hanji seemingly in disbelief.
"Yup you got it Shorty!"
She said wandering over to the bar with him as I stayed behind with Erwin.
"I didn't expect your costume to be lewd too Corporal."
I giggled looking up at him, I was wearing heels but I was still tiny in comparison.
"This was a last minute costume, Pixis suggested it and I didn't exactly have a say in it."
He sounded a bit flustered at my comment.
"You look amazing though I have to say Captain, though it is pretty lewd."
He said sounding slightly nervous looking down at me.
"Can we cut the formalities, it's a party after all."
He nodded as I grabbed two drinks from the makeshift bar and handed one to him.
"Cheers to babysitting."
I giggled clicking glasses with him as he just smiled down at me.
I noticed him staring and got a smirk on my face as an idea popped into my head.
"Erwin if you're going to stare at least let me show you all of my costume."
I smiled up at him seeing his face go fully red now, I spun around showing him the whole of my costume then looked back up and him and pressed my boobs together knowing full well he could see down my bodysuit.
"You alright Erwin?"
I smiled up at him he looked pretty flustered by now looking down at me.
"Y-yes I'm fine."
He stuttered out and I found it cute seeing a man of his caliber struggling to find the right words.
I stood in front of him and leaned back so I was laying back against his chest as I looked at the cadets.
I saw Eren and Connie dancing like there was no tomorrow, Mikasa and Ymir we're trying to have a good time, Jean and Reigner were having a drinking contest, and Sasha was just eating candy.
Then my eyes made my way to Hanji and Levi, Levi looked about as annoyed as ever but Hanji seemed to be a bit tipsy and was probably asking for something since she was being weirdly nice to him.
I pressed my hips back against Erwin as he put a hand on my shoulder.
"(Y/n) you really shouldn't be doing that."
"I don't see much of a problem Erwin, I'm just relaxing and you're comfortable."
I giggled seeing him sigh but keeping a blush and a smile on his face.
Hanji looked over at us and seemed to motion for me to come over to her.
"I'll be back in a moment, Hanji seems to need me."
I smirked as I turned to Erwin and he nodded back at me.
I walked to Hanji to see a very irritated Levi next to her.
She pulled away from him as she dragged me to a more quiet corner of the room.
"I see you're getting friendly with Shorty."
"And I see you're getting comfortable with Eyebrows."
We both laughed at the stupid nicknames we gave them.
"Let's be honest here, you have every chance with Eyebrows so go get em. I don't want to touch Shorty with a 20 foot poll, so I'll stay down and babysit with him while you go have some fun."
I blushed at her words and looked back at Erwin who had Levi talking to him as well.
"You're sure? I can go but I'm not exactly sure he wants to 'have fun' with me."
"He does! Do you see the look on his face when you flirted with him! It was priceless! Plus I may have already worked it out with ShortStack."
She rushed through that last part and it finally hit me why she was being so nice to him, normally she would be trying to talk him to death.
I sighed and hugged her before I walked back to Erwin, Levi smirked at me before leaving back to the corner with Hanji. He apparently handed Erwin two more drink, he handed me one as I made my way to him.
"Thank you, I assume Levi was getting on your case."
I lied hoping Levi didn't mention anything about the whole 'they want us to fuck' thing.
"He was briefly, mostly about how dirty this place is."
He chuckled softly as I took a sip of the drink and noticed it was a lot stronger than what we were having before.
Erwin hadn't drank much of it either so neither of us were tipsy.
"Well as far as I'm concerned him and Hanji owe us both a favor after tonight."
I smiled up at him as he just looked at me confused.
"I blame Hanji for this."
I leaned up and pulled him into a heated kiss, this caught him off guard but he soon melted into it.
His hands wandered around my body as he soon settled with one hand on my back.
I pulled away and looked at him he looked breathless with a smirk on his face.
"Come on, Hanji and Levi are probably waiting for us to leave."
I giggled grabbing his hand pulling him up the stairs, I saw a blushing Hanji and a fairly shocked Levi as we exited the party.
I dragged us both to his office since it was the closest room we could lock.
I pulled him and sat him down on the couch before straddling him.
"I find it hard to believe you want me even though I look like a skeleton right now."
I giggled motioning to my face, where half was covered in face paint and my eyes were white.
"Doesn't make you any less beautiful."
I sighed internally at how sweet and innocent he was for being a Corporal.
I tugged his blazer so he was making out with me, I pressed my hips down harder against his growing bulge while his hands found their way to my hips.
I moved against him a bit more desperately before he flipped us over.
"You look even more stunning spread out for me."
He said as he kissed down my chest, my costume didn't allow for me to wear a bra so he pulled the top down and started sucking and biting my nipples.
"F-fuck~ More please~"
I whimpered our seeing him smirk up back at me.
He moved down and opened my bodysuit from the snaps and slipped my fishnets off my legs.
He licked up my slit and pressed two fingers inside me.
"E-Erwin I'm a virgin b-be gentle please~"
I begged seeing him look up at me and pull off for a second.
"You're 18 (y/n) I find that hard to believe, you're gorgeous and you've never had sex?"
"I-Um I never really wanted it with a-anyone but you."
I stuttered out with a blush spreading across my face.
"I'll take my time with you."
He purred as he bit my thigh lightly and began eating me out again, his tongue swirled around my clit as his fingers pumped inside me.
"You're so tight I don't know how I'll fit inside you~"
"Please~ j-just keep going~"
"As you wish~"
He kept at it for a few more minutes, I was a moaning mess in front of him before he pulled off and unbuckled his pants.
He slid them down along with his boxers and I could see why he was worried he wouldn't fit inside me.
"This will hurt, so tell me when I can move."
He said as I nodded and he pressed into me, I felt a wave of pain run through me at his sheer size being inside me. It soon subsided a few moments later as I felt a wave of pleasure coming over me now.
"P-please move~ f-fuck I need you to m-move~"
I begged as he smirked down at me and began pounding into me, he went slow at first but then his pace quickened as I felt one of his hands come up to squeeze and pinch my nipple while the other rubbed my clit.
"F-fuck I want to cum~"
I whimpered out as he kept fucking into me basically growling when I said this.
"I'm going to make you feel so good tonight, this isn't the only time you're going to cum. I'm going to play with you until you can't cum anymore~"
He groaned as he kept fucking me through climax, I felt so overstimulated at that moment his hands were wandering around my body as he kept a steady hard pace inside me.
He moved up to make out with me, I noticed non of my makeup actually had spread on to him which surprised me.
The kissing was sloppy with me basically using him to muffle my whimpers and moans into his mouth.
"I-I'm gonna cum again~"
I said as he pulled away from me with a trail of spit connecting our lips.
"Cum for me."
He said as his pace had now gotten sloppy, I felt fucked out at this point already with him soon filling me up as I tightened around him.
He pulled out and tugged me upwards to kiss him as he slid his pants and boxers back on.
I giggled as he pulled away finally seeing his lips were a bit covered in my white paint I used to make it look like a scull.
He just pressed another kiss against my lips and grabbed my fishnets from the floor.
"I believe we should head back to the party."
He said helping me get my fishnets on, I brought them up and buttoned the snaps of my bodysuit back up as I adjusted my boobs again so they were in my shirt.
"We can, I think Hanji had probably strangled Levi by now, only problem is this."
I motioned down to where he had left a bunch of hickeys down my boobs.
"They were the ones who set us up, they should know that was bound to happen."
He chuckled as I tried to stand but failed, I felt him pick me up and place me back down on the couch as he put my heels on for me and carried me bridal style back down to the cellar. He put me down before anyone could see but I clung onto his arm for support as we entered the party once again.
The cadets were still drinking and dancing, they all looked like it was still early into the night.
Then I saw Hanji and Levi, I smiled to myself seeing Hanji talking Levi to death. She then noticed us and started bouncing with joy. I looked back up at Erwin and pulled him into another heated kiss then looking back at her.
"What was that about?"
He chuckled wrapping his arm around my waist.
"Hanji wanted to see her ship sail, plus I just like kissing you."
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