Life of Denji (JJK x Chainsaw Man)

I sat in a blue living room, eyes glued to the TV screen. I shoved handful after handful of chips into my mouth. Once I ran out of that, I moved onto a ham and cheese sub. My adoptive parents, Makima and Gojo argued in the background. I could make out a few words:

"You let him just rob that convenience store as Sukuna, then told the police it was another man?! Do you know how much I want to strangle you in chains right now?!"

"It was a mistake, honest to the God's! I tried to stop him with infinite void!"

"Keyword: TRIED! TRIED AND FAILED!"

"Listen, we could just have Denji watch over him next time. Make sure he doesn't steal any more stuff, Pookie!"

"The stolen stuff Denji is currently eating!"

The rest of their words slowly faded into muffled nonsense as I stuffed my cheeks.

Yuji was on punishment, locked away in his room upstairs with Sukuna inside his noggin.

Now, I know you're wondering: how did I end up in a chaotic family like this?

Well it all started when I was pretty much a kid in the country side. Had no choice but to kill this thing called a Tomato devil for money. Parents? Pfft.. didn't have any real parents! My mom died from her heart condition after I was born. My dad was a dick who worked for the Yakuza. Did odd jobs just to pay off his debt. They were the only ones that provided a roof over my head.

I walked towards a farmer's car, covered in tomato juice. He was an old man with white hair. "There... I killed them."

"Glad you took care of my little problem. I'll give you 100 more yen if you eat this cigarette!" The old man said. I made a face in disgust, but chewed and pretended to swallow. The geezer laughed, giving me the money before driving away. I spat out the cigarette bud.

"Okay... now to head on back- what... what the heck is that?" I saw something orange... quivering in the distance. It sounded like a puppy, but looked nothing like one. I put away my knife, then lifted my eyepatch to get a better look, even if the vision in my right eye was foggy. The thing looked kind of like a round alien with a chainsaw sticking out of it's head. It had a pull string for a tail and dog paws at the end of it's stubby legs. Once I got closer, I saw it's injury. It growled at me, even when it couldn't quite defend itself.

"It's okay, it's okay! I'm not gonna hurt you! You're a Devil, right?" I whispered. The poor creature stopped growling and closed it's eyes. It nodded yes.

I steadily reached out to pet the little Chainsaw Devil, and it leaned into my hand. It then fell back whimpering, it's breathing slowed down. The Devil closed it's eyes, as if accepting it's fate.

"You can't die... not here... I can tell you seem friendly. My dad told me devils survive on blood. Maybe if I help you, you can help... me?" I cut my arm with the knife, then gave the devil some of my blood. They sucked on it eagerly like water. The devil stopped feasting on my arm once it's stomach wound healed. It's breathing sped up.

"You have a name?" I asked it. The Devil shook it's head with a sad, puppy like expression. I coughed up blood.

"You look kinda like a pooch. I'll call you Pochita!" I smiled. Pochita's tail wagged. It jumped into my arms and licked me, as if agreeing with that name.

"Ha ha ha! Okay okay, slow down!" Despite my stupid heart condition ruining the moment, Pochita brought joy to my life. I used an abandoned baseball and played with him for a bit, when all of a sudden, my father arrived back at the farm.

"Hey, kid. I've got a job for you. And what's that? A new weapon?"

"You... Kinda could say that. It's a Devil. They're one of the nice ones, though. Pochita. Will I get to eat bread with jam like the normal people?" My eye lit up a bit.

"Yeah yeah, just get in the car." My pa opened the door and gave me a cold stare to this day I swear I could still goddamn feel!

I picked up Pochita and went into the back seat. They wheezed as if they already feared my father.

"Shhh... it's gonna be okay! It's gonna be alright!" I whispered to Pochita. Boy, was I sure as hell wrong!

Dad and I walked into an abandoned building.

"So, what did you want to show me?" I asked. Suddenly, Pochita started barking and snarling. My dad laughed dementedly, revealing himself to actually be a Zombie Devil. "You really thought I was gonna provide you more money, huh?" The zombie chuckled.

"No! NO! DAD! What did you do to him?!"

"I got bit... and I survived the only way I knew how, infecting the stupid men into zombies when they tried to make a contract with me!" The Zombie Devil then ordered his zombies to kill me. I grabbed Pochita and held them out in front of me. Not knowing how they worked, I pulled their tail, reaving up their chainsaw nose. It whirred and roared as I sliced through the zombies. Crimson red blood sprayed everywhere as tears streamed down my face. I tried going for the heads, only for them to outnumber me and toss me into a dumpster. I thought I was gonna die right there... My vision became blurry as I saw my arm was bit.

"No hot girls... no jelly sandwich... no warm home..." I croaked out, coughing blood. I felt four paws on my chest before whiting out.

I can't tell if it was a minute or a few seconds, but I woke up. Pochita was nowhere to be seen, but their cord (formerly their tail) was sticking out of my chest. I got up from the dumpster.

'Wh... What happened? Wait... my heart doesn't ache anymore! I don't feel like coughing!' I thought.

'That's because I sacrificed myself to become your heart, Denji.'

'YOU CAN TALK?! AND YOU'RE A GIRL?! This is NOT what I meant when I said I wanted a girl inside me!' I shook my head.

'Only telepathically, Denji. You saved me. You said you wanted something in return, so I'll become your heart and armor. You have my word for it. Pull the cord on your chest, and I'll grant you my Devil abilities!' Pochita said.

''Devil... abilities..." I gripped the string.

"Hey! He's still alive!"

"But how?!"

"I dunno, get 'em!"

The zombies charged at me. I quickly pulled the cord and went through a bad@$$ transformation. My hands, head, and teeth turned sharp until the limbs protruded painfully into chainsaws. My legs and arms gained more muscle. I felt an animalistic hunger kick in, as I killed every single one of the zombies; Biting, slashing, and tearing them apart. My dad was left, begging for forgiveness. I laughed hardily then sliced him in two.

I suddenly felt weak once the massacre was done. The place was covered entirely in blood. I went on my knees, hearing someone walk in.

'No no... They can't see me like this! They'll call the cops!' I thought.

However, the opposite happened. I heard a male voice gasp in...

Joy?

"You, you did this? I sure hope you did." The voice said, unusually chipper.

I glanced up, seeing a tall man with white hair and fair skin. He had on a black blindfold, black shoes, a black jumpsuit to match.

"...Yes. But I'm... broken. I just...killed my dad... Hold me, please." I softly said before falling over. The man teleported behind me and caught my body.

"A child who's possessed by a Curse? Looks like I've got another one." The man mumbled as he held me.

"This... isn't a curse. It's a miracle, and... I want you to... fucking acknowledge it!" I choked out, still tired as hell.

"You can explain it to me when we get home! My name is Satoru Gojo! But you can call me, Gojo!"

"...Bacon-toast."

"Hmm?"

"Bacon-toast. I want that for breakfast tomorrow. With jam." I said as my body shifted back to it's human form.

"You can have more than just that, dear boy! Now... tell me your name?" Gojo slightly chuckled.

"Denji."

"No last name?"

"I hate... my family. I hate my last name..." I tried not to cry.

"Well, I'm sure my wife Makima and our son would love to see you."

"Wife? Beautiful..." I felt like falling asleep. My body was limp in his arms, and I didn't exactly trust him. 'He's way WAY too chipper to find me. What if this man is a rapist, or a closeted pedophile?'

"Beautiful doesn't even describe the half of it. She knows more about Devils than I do. You're getting adopted." Gojo confidently said as he began to walk.

"The Chainsaw Devil... is inside me. Are you sure ... you want this? Want to raise this?" I held onto his arm.

"Hai! My wife and I will train you to control that Devil!" He clapped his hands together.

"You're... way too happy."

"And you're way too sad, son! Cheer up!"

"Not accepting that term."

"Ha!" He laughed, when out of nowhere, we teleported through a rainbow looking wormhole. Suddenly, we were in a brightly lit house. A child with pink hair was on a dark brown carpet with Playgo bricks.

"Dad... Who is that? Why is he covered in blood?" The kid shivered. He had round brown eyes and a small nose.

"This, is Denji-Kun. Your- How old are you?" Gojo looked puzzled.

"Ten." I told him.

"Your biiiig brother!"

"I don't like him. He scares me." The kid softly said. And rightfully so. Despite not being in the Chainsaw Devil form, I probably look like a monster to him.

"Oh, relax! He didn't attack me one bit! He just killed Zombie Devils, is all! Come on, Yuji, say hi to your new brother!"

"He's not my brother..." Yuji grumpily said.

"You name's Yuji Gojo? Hi." I waved.

The child slowly waved back, then continued to build whatever he was focused on.

"You need a shower, Denji. Come on." Gojo said, taking me down the hallways.

"New fresh meat to play with..." A mysterious demonic voice whispered. I shivered, trying to look for the source, but no such luck.

"Gojo, what was that?"

"What was what?"

"That voice."

"Nothing to worry about." The man said before closing the bathroom door.

I was left there alone with my thoughts. Happy to have a good roof over my head, but scared of whatever the hell that demon voice was. I took off my clothes, turned on the faucet and grabbed the soap. I felt a sense of relief as the cold water washed over me. It was so hot out there, and being covered in all that zombie blood didn't help. I felt my right eyelid, apparently that was healed by Pochita, too. My fingers then brushed across my teeth; they were unusually sharp, like a shark's.

'Perks and drawbacks... But I should thank you for saving me, Pochita.'

'Anytime! And something tells me this blonde man will benefit us greatly!' Her jolly voice echoed in my head.

'...We can only hope.' I thought as I watched the blood flakes swirl down the drain.