(No ones POV)

Queen Celena was talking to the guards after days of searching for (y/n). The last thing she knew about him is that his home was burned to the ground and no one else saw him ever since then.

Celena: Have you found something?

Queen Celena asked the search party of guards, hoping for some good news.

Brad: I'm sorry, my queen. We couldn't find a single thing.

Bob: Maybe his body got burned along with the house?

Brad: No way, dude. The house wasn't completely burned to ashes. There would have been at least some bones left.

Celena let out a sigh while watching how her guards were arguing with each other about possible theories of what could have happened to (y/n). The queen felt like if she was failing to protect the things that were important around her. First it was the closest friend of her family, Adam. Now (y/n) was gone and she couldn't even know if he was dead, alive, or worst...
Celena was starting to become worried about her ability to protect the kingdom and fulfill her duties as queen.
Her husband saw how she was getting stressed and placed a hand on top of hers to try to calm her down a bit.

Logan: Calm down, honey. I promise we'll find him.

Celena: I hope so, my love... I want to at least find out what happend.

Little did the queen know that her wish was about to be granted right away. 
A scissors portal opened in the middle of the throne room and (y/n) long with Scaramouche jumped out of it.

(y/n): Hello everyone!

Scaramouche: Dramatic entrance!

(y/n) was just standing normally while Scaramouche was doing a dramatic pose.

Celena/Logan: (y/n)?! 

Brad/Bob: Piece of scrap!

Scaramouche: Scrap your grandma, you pieces of-

Scaramouche was interrupted by the Queen getting up from her throne and giving (y/n) a big old hug. 

Celena: I'm so glad you are okay, (y/n). But why did you just completely disappeared like that?

Celena asked while pulling back from the hug.

(y/n): I'm sorry, your majesty. Me and Scaramouche needed to hide for a little to think things through in order to find the murderer and solve this once and for all.

(y/n) explained to the queen with a serious expression on his face.

Logan: Have you found something in those days of hiding?

The king asks with an eyebrow raised. (y/n), however, shaked his head side to side in response.

(y/n): I'm sorry, king Logan. We still don't have any names. But we believe we have a way to find out who did it.

(y/n) was partially lying in a way. He already had the information he needed about the person behind all of this crimes. He, however, was just waiting for the best moment to strike back.

Celena: Splendid! We'll finally have a chance to lock this horrible chapter in the history of Mewni once and for all.

(y/n): Yes, my queen. I'll be working on the details after resting for a bit.

(y/n) stretched, letting out the sound of satisfactory bones cracking.

Celna: I understand, (y/n). 

Logan: Once you are ready, please come to tell us.

Both (y/n) and Scaramouche bowed in front of the queen and king of Mewni before leaving the throne room... But Scaramouche came back to give the middle finger to Bob and Brad-

(Time Skip)

(y/n) was sitting behind his desk with a set of tea in front of him to relax. Scaramouche was standing in front of the desk while talking with his creator.

Scaramouche: Master, are you sure this is how you want to handle things? You could just give the name and-

(y/n) interrupted Scaramouche by raising a hand, signaling him to stop talking.

(y/n): I am very sure, Scaramouche. This is after all personal for many reasons. It wouldn't be fair if someone else deals with this situation in a... Let's leave it as "unsatisfactory way" for me.

(y/n) said to Scaramouche with a rather sinister tone of voice. Suddenly, there was some knocking outside (y/n)'s office. Scaramouche went to open the door and it was king Logan.

Scaramouche: Hey, it's the king of kings. 

Scaramouche announced before stepping away, allowing Logan to walk in.

(y/n): Is there something I can help you with, my king?

Logan: Yes, (y/n). I would like to speak to you privately.

(y/n) looked at Scaramouche for a moment.

(y/n): Did you remembered to get the things that I asked you to get?

(y/n) asked Scaramouche before taking a sip of his tea.

Scaramouche: Yes, master of masters. No need to worry about that.

Scaramouche answered before walking out of the office and closing the door behind him. The king raised an eyebrow while staring at the door.

Logan: What things did you asked him to get?

(y/n): Oh, the usual. Just some ingredients... How can I help you, my king?

Logan: (y/n), please. I told you a while ago to just call me Logan.

(y/n) let out a chuckle and started to rub the back of his head in embarrasment.

(y/n): Whoopsie! Sorry... I have been distracted this last few days... Can I offer you some tea?

Logan: How could I say no?

Logan said with a smile while (y/n) started to fill his tea cup. Both enjoyed a few sips of tea while talking to each other about life, the kingdom and a few funny stories that each one of them lived.
However, the fun time ended when (y/n) made a serious question.

(y/n): Logan, while I'm having fun with this talk, let me ask you... Why did you came here? I'm sure it isn't just to have a small talk, right?

Logan let out a sigh and placed his tea cup down on the table.

Logan: You are right, (y/n). I wish I came here just to have fun and talk about the good old days... But I came here because of the murderer problem.

(y/n) crossed his arms and rested his back on his chair while Logan was talking to him.

Logan: How are you planning on finding out who is the killer?

(y/n) remained quiet for a couple of seconds while the king was staring at him.

(y/n): I already know who did it.

(y/n) said with a straight face, shocking the king with his answer.

Logan: Y-You know? Then why didn't you told us anything about it when we were at the throne room?

Logan asked confused and surprised with (y/n)'s behavior. (y/n) took another sip of tea before answering the question Logan made to him.

(y/n): It's simple, actually... If I were to tell the queen...

(y/n) eyes glared at the king with a strong, yet very calm rage. It was almost like the feeling one experiences in the eye of the storm.

(y/n): She would show far too much mercy to my father's murderer...

Logan's expression changed from one of confusion and surprise to a serious one, empty of any emotion. 

Logan: Hmph... So you didn't tell my wife I did it just to make a plan to get revenge, huh?

(y/n): You could say that is half of the truth. I also don't want to ruin the image both your wife and the kingdom have of you. They see you as a good king and a lovely husband... It would be unfair to shatter their view of reality by telling them that the king is a murderer, wouldn't it?

(y/n) explained calmly while taking another sip of tea.

Logan: I see... You have my gratitude for protecting my wife and my kingdom... However...

Logan was slowly unsheathing a dagger attached to his waist.

Logan: You let your rage reveal your intentions in the worst possible moment. And now, in order to protect my secret, my wife and the kingdom of Mewni... You must die.

Logan was pointing his dagger at (y/n).

Logan: And don't think you can use magic to save yourself. I'm wearing my special armor that negates the effects of magic... But worry not, I promise I will make it as painless as possible.

Despite Logan's threats, (y/n) was still perfectly calm. Not even a single display of fear or despair was writeen on his face. Logan was confused why (y/n) was so calm when death was in front of him.
However, Logan quickly started to feel a burning pain inside his chest. That's where Logan learned that death was in front of (y/n)... But it wasn't (y/n)'s life death was going to claim today.

Logan: W-What did you do?!

Logan asked while the pain on his chest was quickly getting stronger, his body started to feel heavier, and his throat was getting tighter. He was colapsing on (y/n)'s desk and he stabbed his dagger on the table to not fall on the floor.

(y/n): What did I do? Well, it's rather simple actually. I just gave you the same poison you used on my father... Very poetic to pay you back with the same coin, isn't it?

Logan: I-Impossible! That poison can't kill someone in a single day! You need to use many drops for days to make it look like an illness!

(y/n): Yeah, the regular poison you used takes quite long. However, when I'm working with old things I like to see if I can make them better... Improve them, if you wish to see it like that. And my improved version of the poison can kill someone in a short spam of time and the victim only experiences the effects when it's far too late.

Logan let go of his dagger and fell on the floor. He was on his knees, trying to get up while his condition was only getting worst.

Logan: W-When did you poisoned me?!

(y/n): The tea, Logan. It should be obvious by now.

Logan: T-That can't be true! You have been drinking from the same teapot as me!

(y/n): I did, yes. However, I took some strong antidotes before starting to drink. I knew you would come to me as soon as I revealed some dangerous information that could expose you. So, I took some time to prepare for our little "talk" just like you did with your armor. 

Logan's face was red like a tomato. Tears were falling from his eyes and he was struggling to breath. He was slowly crawling to the door, but he collapsed on the floor, unable to to keep moving foward. Logan then remembered the small talk Scaramouche and (y/n) had before the robot left the office.

(Flashback)

(y/n): Did you remembered to get the things that I asked you to get?

Scaramouche: Yes, master of masters. No need to worry about that.

Scaramouche answered before walking out of the office and closing the door behind him. The king raised an eyebrow while staring at the door.

Logan: What things did you asked him to get?

(y/n): Oh, the usual. Just some ingredients... 

(End of Flashback)

It must have been thanks to those ingredients that (y/n) made a superior version of the poison Logan used on Adam.

(y/n): We are not done yet, Logan.

(y/n) turned Logan's face up, so now he would be facing the roof instead of the ground. Logan's body was convulsing while (y/n)'s was staring at him with his arms crossed behind his back.

(y/n): I would like to ask you why... Why did you killed my father and then why did you tried to kill me? You will die soon enough so... Might as well get it out of your chest.

With the little strenght Logan had, he grabbed (y/n)'s leg while grunting.

Logan: B-Because your family is cursed! He showed me! He... HE... G-GAAAAH!!!

Logan was now vomiting a purple liquid while blood was coming out of his eyes. (y/n) slapped Logan's hand off his leg and walked up to the door.

(y/n): Welp... I guess now it's my turn to do my part.

(y/n) opened the door and fixed his throat for a moment.

(y/n): ...HELP! HELP! THE KING NEEDS HELP! THE KING IS DYING!

(y/n) yelled as strong as he could in the castle's halls. Logan was letting out his dying breath while guards were quickly rushing towards (y/n)'s office. 
Since no one knew Logan was the killer of (y/n)'s father, that means everyone still thinks the killer is still out there. So (y/n)'s acting managed to fool every single guard while he was lying to them, telling the guards that he and Logan were just talking together until the King started to die in front of him. (y/n) even managed to hide the small details like the dagger of the king by placing it back on Logan's waist and keep his own tea cup full so it seems like (y/n) never took a sip from it, making it look like if he avoided the poison by pure luck.

The guards were slowly carrying Logan's corpse while keeping his body covered with a white mantle. (y/n) was looking at Logan's corpse while think on his words... Who told Logan that (y/n)'s family was cursed?

Hekapoo: (y/n)!

Hekapoo rushed into (y/n)'s office and gave him a quick hug.

Hekapoo: I heard what happened to Logan! Are you okay?!

(y/n): Yes... I'm fine...

(y/n) was faking a sad expression on his face. However, he was celebrating inside of his head after avenging his father. There were still a few things to solve and a single loose end to deal with. But those things could wait for a bit until things calm down for a bit. Besides... If Scaramouche followed his instructions, he should have been able to deal with the loose end.

(Meanwhile: A few moments before Logan's death)

Scaramouche was in the king and queen's bedroom. No one was inside and he was free to look around for what was stolen from (y/n)'s father.

Scaramouche: Now, if I remember correctly...

Scaramouche took off a painting on the wall, revealing a strongbox on the wall.

Scaramouche: Ah, now this is a classic full of essence~

Scaramouche did an Italian hand gesture before working on the strongbox. He was quickly trying different combinations while listening carefully.

Scaramouche: Come on, baby~ Let this magic hands do wonders to you and open your dirty secrets to me~

*CLICK*

The strongbox's door got unlocked and it was slowly opening.

Scaramouche: You were great, babe. We have to do this more often~

Scaramouche then started to look inside the strongbox for the thing he wanted.

Scaramouche: Gold bar, gold bar, another gold bar, golden ring to rule them all, monkey hand with three wishes left, a chaos emerald, a Geo vision, map to find the anti-life equation, more gold, an ocarina-AHA!

Scaramouche found the stolen page of a book that was part of Adam's collection. That single page had a very weird strange looking cube in one of its pictures.

Scaramouche: I hope that is a nice music box... Anyway, better take this out with me while my sweet master is having fun with the king.

(Back to the present)

Both Hekapoo and (y/n) were looking at the queen sitting on her throne, crying her heart out at the death of her husband. (y/n) told Celena to better visit Logan's corpse later after it was properly cleaned since... It wasn't a pretty sight.

Celena: First my husband's best friend... And now my Logan...

Hekapoo: I'm so sorry for your loss, queen Celena.

(y/n): I'm sorry too. I was so sure that the killer was after me... I guess he was after the king this whole time...

Celena was still crying very loudly. Her make-up was ruined, her voice was a mess, her eyes were red and even her hair was starting to look out of shape.

Celena: I... *SNIFF*-I couldn't even give Logan the good news...

Hekapoo/(y/n): Good news?

Celena placed a hand on top of her belly. She had a weak smile on her face.

Celena: I wanted to tell her that we were going to have a baby... But I was too shy to tell him straight away so, I wanted to make the revelation special.

Hekapoo gasped in shock while (y/n) remained in completly silence, with his face getting more and more pale. A few moments ago, he was filled with joy after killing Logan for what he did to his father. But now... (y/n) was filled with a horrible pain inside his heart. Because of his actions, the new princess of Mewni will now grow up without a father figure. 

(y/n): Dear lord...

Hekapoo: Celena... 

Celena: I... I just need a moment for myself.

Celena got up from the throne and slowly walked away with some guards following closely.

Hekapoo: That... That was so horrible. I can't even imagine what Celena is going through, (y/n).

There was no answer from (y/n) to Hekapoo. He was looking at the floor with his eyes shaking, knowing what he did to Celena and that poor baby that didn't even placed a foot on the world.

Hekapoo: (y/n)? (yyyy/nnnnn)? (Y/N)!!!

She slapped the back of (y/n)'s head, burning him a bit.

(y/n): Ouch! Sorry! I... I was deep in thought.

Hekapoo: What were you thinking about?

(y/n): In this whole situation... And that there is far, far too much for me to yet to discover.

Hekapoo: You are talking about the killer who did this? We'll get him and-

(y/n): No... I believe there is far more behind the shadows than this...

(y/n) said while walking away from Hekapoo, leaving her very confused.

(Time skip)

(y/n) was back at Hekapoo's place. He was staring at the page that Logan stole from Adam's book. It was a cube that was made by his grandfather... In concept. The actual artifact was never actually created and (y/n) could see why since the resources to make it are far, far too hard to find if not outright extint.

This, however, only resulted in more questions. Why would Logan want this page if the artifact on it could not be created and even more important, when Logan didn't had the knowledge to actually attempt to make it? (y/n) was suppose to find answers after dealing with his father's kilelr and yet, he only ended up with more questions. He was far too deep into the rabbit hole to turn around and leave now, afraid that if things were unchecked, more people could get hurt.

(y/n): Uuuggghhh!

(y/n) slammed his head on top of the page in frustration.

(y/n): I was suppose to solve the puzzle, but the puzzle solved me first...

Hekapoo: You need to rest.

(y/n): AAAAAAHHHH!!!

(y/n) fell off his chair in surprise.

(y/n): W-What are you doing here?!

Hekapoo: Uh... This is MY house... Remember?

(y/n): O-Oh... Right... Silly me...

Hekapoo let out a sigh and helped him to get up.

Hekapoo: Listen, dude. You need to rest for a bit. You took a big hit from all of this.

(y/n): But-

Hekapoo placed her finger on top of (y/n)'s lips to silence him.

Hekapoo: No buts, mister. You better rest because if I find you reathing books again until it's 4 AM, I will burn each one of them.

(y/n) quickly placed the teared page that was on top of the table back inside its book before closing it. Hekapoo let out a chuckle and smiled at (y/n).

Hekapoo: You know what, (y/n)? I know things have been very rough and complicated this week... But maybe you and I can just hang tomorrow.

(y/n): Just the two of us?

Hekapoo: Yes... Just the two of us.

Scaramouche: OOOHHHH!!! SOUNDS LIKE A DATE!!!

Both Hekapoo and (y/n) screamed in surprise since when Scaramouche appeared out of nowhere.

Scaramouche: Can I go too?

Hekapoo: Why you?!

Hekapoo tackled Scaramouche and started to beat up the poor robot.
(y/n) let out a sigh and slowly moved his gaze towards Adam's book, which contains the so important cube page. He didn't wanted to admit it, but (y/n) was going to need Gaster's help to find answers...

Tomorrow, after hanging with Hekapoo, (y/n) will do another leap into the abyss in hopes of finding new clues... (y/n) only hopes to be able to crawl back out of the darkness once all of this is finally over...

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AAAAAAAAAAAAAAAAAAAAAAAANNNNNNDDDDD DONE!!!

I know the mistery wasn't hard to solve. But I wasn't aiming to make a hard to solve mistery about who was killer, but more about the reasons around its crimes and why was that box so important... You'll see once we get there eventually.
Anyway, this Mecha wishes you all a good day/night.

And remember... I LOVE YOU ALL!!!