ItachiVak

After causing a tech disaster in the real world, genius shut-in Rin Katsuro is sentenced by the gods and banished to Ereborn—a realm ruled by chaos, where ancient scripts control magic and dungeons feed on trauma.

He wakes up in the body of a legendary war criminal—the Demon King's General—and is mistaken for the adoptive father of a demon princess.

Armed with unstable “Error Magic” that lets him rewrite reality like code, Rin doesn’t want to be a hero... but when angels declare war on the demon races, and his daughter calls him “Papa,” he might just rewrite fate itself.

This is the story of a broken man with nothing left to live for—until an entire world starts calling him Dad, Demon, and Destiny.

I Was Banished from Heaven, Now I’m the Demon King’s Stepdad?!

The fortress was quiet… too quiet.

Rin sat near the fire with Lilith asleep in his lap, snoring softly with her teddy demon clutched tight. Her tail flicked occasionally. Her hair shimmered with streaks of crimson now—leftover from her awakening.

She's growing fast, Rin thought. Faster than what's normal.

[New Trait: "Overclocked Bloodline – Unstable Evolution Potential"][Warning: Uncontrolled trauma may trigger berserk transformation]

"Cool. I've got an emotional nuke for a daughter."

Three shadows crept into the ruined fortress. Fast. Silent.

They were Demon Council enforcers, each bearing a brand: ☠️⚜️—the Seal of Abyss Judgment.

"Target confirmed: Valtazar reanimated. Terminate with minimal noise."

But as the lead assassin drew his curved blade—

[Glitch Field Triggered: Anti-Intrusion Protocol 1.2][Deploying: "Sleep Deprivation Protocol – No Sneaking Past a Dad"]

Rin's eyes snapped open, glowing with static.

He stood, gently laying Lilith on a pillow made of his cloak, and cracked his knuckles.

"You got three seconds to leave. After that, I test a new admin spell."

⚔️ Combat Begins – Dad Mode: ON

Rin glitched backward, reappearing behind the assassin mid-strike.

[ERROR MOVE: Frame Skip]"You're lagging, bro."

A punch to the back of the head sent the demon flying into a pillar. Crumbled.

Another hurled spears of shadow. Rin waved his hand.

[Admin Command: "InvertProjectile()"]The spears spun midair and reversed, impaling their sender.

The third demon—clearly stronger—clashed with Rin head-on, his axe glowing with corrupted energy.

"You are not Valtazar. Your soul is fractured."

"Nope. I'm just the guy raising his daughter better than the last one did."

😈 Lilith Wakes Up – And She's Not Happy

The ground trembled. Shadow leaked from her eyes.

She floated upward, eyes glowing. Her voice echoed with two layers.

[Warning: Bloodline Rage Triggered][Passive Override: "Sorrowstorm" Activated]

A black storm erupted from her body, sucking in the air like a void. The remaining assassin screamed as shadow tendrils crushed his body like a soda can.

[Trauma Dungeon Forming...][Aborting. System Lock – Root User Interference Detected.]

"I'm here. I'm always gonna be here, okay?"

She blinked, shaking, until her tears fell.

"You won't," he whispered, hugging her close. "Not while I'm still bugging this world."

In an ancient temple of data and bone, a glowing figure watched Rin through a system mirror.

A glitchy voice echoed behind the figure.

"Shall we initiate Protocol: Purge?"

The figure, cloaked in flowing code, raised a skeletal hand.

"Not yet. Let the boy play house."

📦 Cliffhanger: The Glitched Gift

Back at the fortress, a ding echoed.

[You've received a system mail]

A glowing cube appeared in front of Rin.

"To: Root User // From: ???""Congratulations on surviving fatherhood. Here's your first bugged relic. Let's see what you do with it."

[Item Gained: ??? – "The Broken Crown of Ereborn"][Description: Contains corrupted fragments of this world's original creator.][Equip at your own risk.]

"...This world just keeps getting weirder."

Chapter 5 – “Kill the General, Test the Dad”