Bony Boy goes to JJK World

Author, here. Don't have much to say besides thank you all for the reviews. I'm having a lot of fun writing this fanfic and I'm glad you are enjoying reading it.

-Lots of spoilers on JJK read at your own risk.-

"Mahito! Momonga! Something terrible happened!" Junpei screamed as he entered their hideout.

With tearful eyes and a high-pitched voice, he continued to scream as he checked every corner of the place.

"Calm down, Junpei. " Mahito said as he slowly got up from his hammock. "Momonga left to fight some people. Tell me what happened? " The human curse continued.

"It's my mom. She's... she's... She needs Momonga's help." Junpei said in between gasps. He tightly placed his hand over his chest and looked into Mahito's eyes.

Mahito immediately held back his facial expression maintaining a neutral exterior. 'You can't laugh now. Not in front of him. Hahaha! ' He thought as he walked to the kid.

"What happened? " Mahito said with a small voice.

"Where is Momonga?! Where did he go?! " Junpei said while looking around the place. He paced the room from corner to corner nonstop for a few seconds while repeating the same question.

Mahito placed his arms around the boy who immediately jumped into the curses's arms. The boy's tears increased 10 fold.

"Where is he Mahito? " The boy asked as he fell to the ground.

Mahito and Junpei were crouched down on the floor hugging each other while the boy tried to hold back his sadness.

"Momonga will be here soon. Tell me, what happened? " Mahito said as he stroked Junpei's hair.

"I don't know. My mom's hurt, but I think Momonga can fix her. You said that he's the death curse, right Mahito? Maybe he can..." The boy asked.

Mahito hugged Junpei tighter making it impossible for the boy to see his face. Ainz's gate opened right at that moment and when the undead came out he got a good look at the creepy smile Mahito was making.

As soon as Mahito saw Ainz was there he changed his expression to a happy face.

"Momonga, welcome back. Did you have fun? " The curse said as he winked at him.

'What is going on here? ' Ainz thought as he exited his portal.

"Momonga!" Junpei jumped out of Mahito's arm.

The boy ran towards the undead tripping along the way until he finally made it to the undead. Junpei grabbed Ainz's clothing and started yelling.

"My mom! Something terrible happened. I need help, please! " The body screamed as he pulled on Ainz's attire.

"What is this about? " Ainz said with a deep voice. His eyes focused on Junpei's hand grasping his divine gear.

The boy's eyes widened in realization as he let go of the undead's clothing and in a single motion bowed down in front of Ainz.

"My mom was killed. Can you please fix her? I'll do anything, please! " Junpei said as he scrapped his head on the floor so hard it left blood on it.

Ainz looked at Mahito who was trying his hardest to not laugh. ' I'm more confused now than back in the fight. What the hell? ' Ainz thought as he lowered himself to pick up the crying baby from the floor.

"Don't bow to me like that. When you ask something from me you need to look me in the eye. " Ainz said as Junpei stood up and looked at him. "You said something happened to your mother. Someone killed her? " The overlord asked.

Junpei simply nodded.

"Are you sure? " Mahito asked as he made his way closer to the boy.

"... there was blood everywhere... inside the house... and I found half a body with her clothing on..." The boy said. He took a deep breath and cleaned his nose in between every sentence.

'Why would anyone kill a random kid's mother and leave so much gore behind? Makes no sense.' Ainz thought as he started to stroke his chin. He looked at Mahito who was covering his mouth with both his hands and making weird faces. 'And why the hell is Mahito acting like that? '

'This is harder than I expected. ' Mahito thought as he barely could contain himself.

"Junpei. " Mahito said after finally being able to behave normally. "If you're right there's nothing we can do. Once people die it's over. " He placed his hand on top of junpei's head.

"But Momonga's the death curse, right? You said it yourself I'm sure he can..."

"It's not impossible. " Ainz interrupted Junpei's reasoning.

Both Mahito and Junpei had their eyes looking straight at Ainz the moment they heard the undead speak.

"Are you serious? " Mahito said with a confused look.

"Are you serious? " Junpei said as his eyes sparked with hope.

"There are many factors, but it's not impossible to bring someone back. I'll need you to take me to your house and..."

Before Ainz could finish Junpei jumped at him and hugged the undead.

"Thank you! Thank you! Thank you! " Junpei said as some of the snot got on Ainz's chest. The undead immediately pulled the kid away from him and placed the boy on the ground.

"Don't thank me yet, it's not guaranteed and I haven't done anything yet. Besides, there is still the payment you'll owe me. One more thing, don't ever hug me again, okay? " Ainz said as he casted the first tier clean to remove the disgusting present Junpei had given him.

Junpei nodded.

"I'll take you to my house. This way. " Junpei turned around and started running.

Mahito approached Ainz and started whispering in his ear.

"Are you just fucking with the kid or can you actually do it? " Mahito asked.

"Depends a lot on many factors, but I think I can. " Ainz responded.

'More like I know it's possible and I'm not just talking about it because of the spells from Yygrasil. I have this confidence that I can do it coming from the depths of my soul. It feels like everything is possible now. ' Momonga thought.

Mahito raised one of his eyebrows before turning to follow Junpei. Ainz followed shortly.

"This is horrible. " Mahito said as he saw the bloodstained room where Junpei's mom was killed. The body was mostly gone.

'It's going well. ' The human curse thought as he looked at the finger that was left on the floor.

"You should go back to your room, Junpei. I'll investigate here a little more. " Ainz said while walking forwards and stepping near the puddle.

Junpei nodded and ran to his room.

Both curses remained quiet until they were sure the boy had closed the door. After that, Ainz raised his left hand and snapped his finger.

[Widden Magic : Soud Barrier]

"The boy can't hear anything we say inside this barrier. Talk Mahito. " Ainz said. The undead's eye flashed as he stared at Mahito. "Why do I feel your presence in this room? "

"It's because I'm here right now, silly. " Mahito said as he smiled at Ainz.

"I'm not in the mood. Also, my name is Ainz Ooal Gown now." The undead said while pointing his finger at Mahito. "You were here before, right? Did you do it? " Ainz asked.

Mahito's expression turned cold and his eyes became distant.

"Yes. And I'm just gonna call you Momonga anyways, okay? Okay. " Mahito said as he passed his fingers in the blood and licked it. "Do you even care about this tho? Are you attached to Junpei by any chance? Even though you are a curse like me?"

"I don't really care about him. I'm just confused about this development. Weren't we trying to recruit him? Why kill the boy's mother? " Ainz said.

"Ahhh. That's what you mean? I thought you were trying to go all morality on me. Phewwwww. You got it wrong. My goal with Junpei is not to bring him to our side. " Mahito said as he approached Ainz. "I want to recruit Sukuna, Momonga. "

'Sukuna? Geto mentioned him before... The ally they need to beat the jujutsu sorcerers.' Ainz thought right after pushing Mahito's face away from his own.

"What does he have to do with Junpei? " Ainz asked.

"Everything. I'm going to use Junpei to force Itadori Yuji to make a pact with Sukuna giving him control over the body. " Mahito said as he grabbed the finger from the floor.

"Itadori Yuji and Sukuna share the same body? Elaborate. " Ainz said.

"It's faster if I show you this. " Mahito opened his hand revealing a red finger with a huge nail and a small piece of cloth tied around it.

'Is this from the dead mother? ' Ainz thought before quickly shaking his head. 'It's mummified. Still, the amount of cursed energy swarming around in it is amazing.'

"A cursed object? What about it? " Ainz asked as he grabbed the finger.

As soon as his hands touched the object Ainz felt a wave of bloodlust coming from the finger. His emotional suppressant undead trait kicked in and stopped him from dropping the finger on the ground.

"This is alive?! It has a soul, but..." Ainz said with a surprised pikachu face. "Is this... some type of soul... fragment? " The undead looked at Mahito who was nodding.

"Sukuna in the flesh. " Mahito said before getting the finger back. He then changed his expression to a funny face and pretended to read an invisible book.

"Once upon a time, there was a very very bad man who created chaos and discord around the land. He was know as Ryomen Sukuna. " Mahito explained with a high-pitched voice with a lot of emphases on the name.

"He was a very bad man indeed, who killed, murdered, raped and etcetera etcetera etcetera. After a long life of causing harm, the people gathered all of their power and after a long battle they killed him. Only... he didn't truly die." Mahito gave a small pause for dramatic effect.

"You see, the man had become so evil that his essence became a curse. Even though he was dead, Sukuna continued to exist in the form of 20 cursed objects, his fingers, patiently waiting until someone compatible would appear and he could once again walk the earth. The end. " Mahito explained.

"And this Itadori is the compatible one? Are you saying that Sukuna has no control over the body and can't do anything without permission? " Ainz asked without showing any interest in the theatrical display Mahito just did. "Sukuna is just a dead curse holding on to a meat suit who does what it wants? "

"Basically, yes. But he's the strongest that there is. Gojo included. " Mahito said as he started to walk towards Junpei's room. "I'll use Junpei to get Itadori to give control to Sukuna. Simple." Mahito said.

'Making Sukuna indebted to the curses and Geto. Will this even work? ' Ainz thought.

Mahito left Ainz thinking in the kitchen and walked over to Junpei's room.

"Junpei? Are you there? " Mahito said while knocking on the door.

The door flew open and Junpei immediately looked into his eyes.

"Can it be done? Can Momonga bring my mom back?!" The boy asked.

"Why don't we sit down first and I'll explain. Momonga is gonna take a bit more time, but I can tell you what happened. " Mahito said.

They both sat on the bed. Mahito pulled out the red finger he picked up from the floor and explained what it was.

"Why is something like this in my house? " Junpei asks while staring at the object.

"There are a lot of people who place curses for profit. They use things like this cursed object to do it. Do you know someone like that? Do you know someone who would do that to your mother? " Mahito asked.

Junpei's expression turned cold for a moment. 'Very nice. ' Mahito thought as he saw his plans bearing fruit.

"I'm done examining. "

They both heard Aniz saying. The undead walked into the room and looked at the boy.

"Junpei. " Ainz said.

Junpei swallowed anticipation of the result. Either his mother was about to be brought back from the dead or she was dead dead.

"Junpei, I won't beat around the bush. Her body is a terrible condition. Bringing your mother back is impossible. " Ainz said.

' I'm sorry, kid. But I'm not using Whish Uppon A Start to try and bring your mother back. I'll just purify the body and bury it.' Ainz thought.

Junpei slowly lowered his head.

"Are you saying that you could have brought her back had she not been killed in that way? " Mahito asked. He showed a very small smile towards Ainz who nodded.

'I'm not gonna get in the way of the curses. Let them do as they may. For now... But when I change my mind...' Ainz thought.

"Had she been shot or stabbed? Yes. The fact that she was killed with Cursed Energy and left in that state makes it impossible to bring her back. If I were to try she would become undead like me. " Ainz explained.

'Wow, is he for real?' Mahito thought. 'Geto did say Momonga's Cursed Technique could be something even more special than my own, but to bring someone back from the dead?'

Junpei's face lit up after Ainz was done explaining.

"If she comes back like you that means I'll still get to..."

"She's not gonna be the mother you knew." Ainz intettupted Junpei. "Even if I brought her back intending to give her the most amount of sentience possible she would not behave like she once did. If not immediately, given enough time, she would become someone else entirely. Not to mention she would be 100% loyal to me. "

The room became silent for a good minute before Mahito spoke up.

"Whether you are going to bring her back or not. There's something else you need to decide first. " Mahito said. "The guy who cursed your mother. What are you gonna do about him?"

Junpei looked straight into Mahito's eyes.

"He has to die." The boy said in a calm and reasonable matter.

'Yes. He's complete now. I'll need to do is to add Itadori Yuji to the picture and then... ' Mahito thought as he nodded.

'So gullible. ' Ainz thought as he shook his head.

"I'll take your mother's corpse and keep it in case you decide to do it later, we'll discuss the payment then. For now, just call the police and tell them that she's missing you came back, saw the blood, and called them. Try to be convincing don't say too much." Ainz said as he turned his back to the boy.

"Careful not to leave any traces or the jujutsu sorcerers could misunderstand the situation, Momonga. " Mahito said.

"Jujutsu Sorcerers?" Junpei asked. He got up and summoned his shikigami.

"Mahito. If I go ahead and take revenge on the dude who cursed my mother, will the jujutsu sorcerers get in the way or come after me later? " Junpei asked.

"It is very likely. If they find you a fight will break out and you'll have to beat them up. Don't worry though. I've changed a few things in your brain and made it so you can fight." Mahito said as he smiled at the boy.

Junpei looked at Mahito and shooked his head.

"It's not good enough. " Junpei said before walking out of the bedroom.

'What is he planning? ' Mahito thought.

The boy went to the kitchen where he found Ainz pulling the cursed energy he realized back into himself. His mother's corpse was already gone.

"Don't worry. I'll keep it safe until you decide, Junpei. " Ainz said.

"Momonga..." Junpei looked at the bloodstained floor and table. He turned his gaze at Ainz and said: "I thought that I only carried about one thing. My mother. But now that she's gone I realized something else. I want... Revenge."

Ainz stood there watching the scene unfold silently. Junpei walked over to his mother's cigarette pack that she used to hide behind the plates inside a drawer. He grabbed it and started sobbing.

"Let's make a deal. " Junpei said after he spent a few moments calming himself.

Ainz's eyes flashed red when he heard that.

"A deal? " The undead asked. "What do you have in mind? "

"I want you to give me some extra power to get my revenge. Like you did back when I was practicing. And then I want you to bring my mother back from the dead." Junpei said as he placed the cigarette pack back in the drawer.

"As I told you before I'll not take responsibility if it fails. " Ainz said as he stroked his chin. " And in return? What will you give me?" Ainz asked.

"Whether my mother comes back like an undead or not. You can have me and my mother. That's your payment. "

Momonga's eye flahsed red.

6 hours later. Satozakura High School.

"Emerge from the darkness, blacker than darkness. Purify that which is impure." Mahito finished his casting.

A liquid-like substance fell from the sky covering the whole school. After a few moments, the whole place turned from day to night and a wall was created with a simple rule. Only someone who can use cursed energy may enter or leave.

Mahito was on top of the main building with Geto as they both prepared to put their plans into action. There was also something else with them, a tall curvy monstrosity wearing what could be called a greenish transparent dress, but it looked more like some type of old curtain someone got from a hunted house. The curse's face looked like a beautiful woman grieving for something she lost, tears ran down its weird makeup making it very hard to see that it had no eyes.

"Thank you, Mahito. I can't take the risk of jujutsu high knowing I was here. " Geto said as he nodded towards Mahito.

"No problem. I got you. " Mahito said as he gave a thumbs up. "Shouldn't we have kept Sukuna's finger though? Leaving it laying in Junpei's house seems like a waste." Mahito asked.

"No. I need Jujutsu Hight to have it for my plan to work." Geto said before turning to the other thing on the roof. "By the Mahito, did you recruit a new Special grade? I didn't hear about this one. Hi! I'm Geto."

Geto said as he went to touch the creature. 'Good amount of Cursed Energy, but not too much that I wouldn't be able to tame it. Could be good to add it to my collection. ' Geto thought as his eyes checked the monster from top to bottom.

"Oh, that one? That's Junpei's mother. " Mahito said while giving a good chuckle. "Momonga used his cursed energy to bring her back from the dead."

"Bring her back from the dead? " Geto asked. "So he created this curse then. He's being more useful than I expected. Although he could learn what laying low means. Ha ha ha. " Geto chuckled a bit.

"Right?! " Mahito said. "Fighting the strongest jujutsu sorcerer two days in a row like that. Creating a Special Grade Curse right after. He's a funny one. "

'As I expected his Cursed Technique can interact with human souls and even create new Special Grade Curses. It's a good plan b if something happens with Mahito.' Geto thought as he pictured Ainz behind him as a puppet for him to control.

"Is she really the mom tho? " Geto asked.

"Hum? " Mahito asked as he was distracted looking at Junpei who was making his way to the gymnasium of the school. "It looks like her to me. The soul felt a bit unstable, but with Momonga's cursed technique, I don't think it will go away anytime soon. She barely talks though. Mostly just keeps crying all the time. "

"I see... Well! I'm going now. Try your best to make this work." Geto said before walking away.

"Yes. " Mahito replied. "Now, When are you getting here Itadori Yuji?" the human curse looked around the campus from the rooftops until he spotted a pink-haired boy running inside the veil.

"Ha ha." Mahito smiled. "There you are."

Inside the gymnasium.

Almost everyone was knocked out on the floor leaving only the teacher and a student to care for everyone else.

"What is going on? Wake up. " The teacher said as he tried to wake the people in the gymnasium.

He repeated the same routine until he heard a loud bang coming from the door. The teacher saw a man wearing what looked like leather clothing. The design had an occult touch with many tentacle-like golden details contrasting with the dark blue attire.

The clothing was tight and big making the man look like he was GIGACHAD. It looked like a very good cosplay of a plague doctor, except for the supernatural ethereal cape that wrapped around the guy like a snake trying to crush its prey.

The face of the person was also covered up with a hood that created a shadow where the face should be. For some reason, he could not see any features except for two white glows where the eyes would be. The darkness under the hood looked like it could not be seen even if you aimed light straight at it.

"Who are you?! Stay away! " The teacher said as he saw the man approach.

The other student heard his teacher screaming and finally noticed the intruder.

"What is that? " The student asked as he turned around to run only to trip and fall.

"I don't have any business with you. Stay down like you always do and shut up. " The hooded man said with a deep voice as he walked by the teacher who immediately went to the nearest corner.

The student turned around and saw the man walking towards him. He did his best to get up and escape, but his legs betrayed him, leaving him no choice but to only watch in terror.

"Tell me why? Why did you do it?!" The man screamed. The power of his voice made all the windows crack a little bit.

The scream made the student's body go into overdrive. He got up and started running until he felt something grabbing his leg.

"You're not gonna escape justice! You'll pay! " The man spoke with an even more ominous tone.

The student felt his arm like a needle enter his arm and something was being injected into it.

"My armmmm! " The kid screamed as he was pulled by his leg and hanged upside down from something that he could not see. He was left facing the hooded man.

"Tell me why so I can kill you with no problem. Confess for once in your goddamned life. Why did you kill my mom? " The hooded man screamed.

"I... never killed anyone. Please. I don't even know who you are. " The student said while trying to cope with the pain.

"Ah yes. I forgot that you can't see my face. " The hooded man slowly pulled the hood back and revealed himself to the student. "Do you have a good look? Answers! NOW! " He said in his normal voice.

"Junpei?! " The student said as he tried to process what he was seeing. "What is... AHHHHHHH" He tried to ask questions, but the pain suddenly increased.

"No no no. Don't get distracted, now. I want to know why you killed my mom. " Junpei asked as he shook his head.

"Please, Junpei. I didn't. AHHHHHHHHH" He tried to reply, but the pain increased even further than before.

"That's not the answer I want to hear. That's not it at all. " Junpei said as flung the dude all the way to the podium.

"All I want to hear is why you planted Sukuna's finger in my house?! Why did you kill my mother?! " The boy screamed before jumping all the way to where the student was.

Junpei landed on top of the student's leg breaking it. The student's eyes rolled to the back of his head.

"Ohhhhh. The killer passed out from the pain?! Don't worry I have time before I..."

"Junpeiiiiiiii!" A voice screamed from the entrance of the gymnasium.

Junpei turned to it while showing off his shikigami to whoever interrupted.

"Yuji? " Junpei said as he saw his newest friend.

"What the hell are you doing?! " Yuji screamed as he entered the gymnasium.

"Stay back! " Junpei's hood climbed over his head and placed itself in the right position. "Jujutsu Sorcerer!" He said in his deep powerful voice.