It was supposed to be a chill Saturday night.
The fan—name: irrelevant for now—was curled up on his couch, a bowl of instant ramen in one hand, remote in the other, rewatching Boruto while muttering under his breath about how Naruto should've stayed the main character.
"Man, it's wild how far this show's come. I miss the OG days—Academy Naruto, pranks, ramen, and chaos. Simpler times."
And then it happened.
BOOM.
A deafening crash shattered the peace. Before he could even process the sound, a massive object tore through his wall—a truck, mid-air, flying directly into his fifth-story living room.
"What the—"
Too late.
Blackness.
---
He expected either eternal void, or maybe a peaceful fade-out. Instead, he woke up feeling... small.
Physically small.
"Where... am I?" he muttered, sitting up from a rough futon inside a small, sunlit room. His hands were tiny. The floor was tatami. The window view? A familiar skyline of red roofs and stone walls.
Then it hit him.
The kanji for "fire" on the Hokage Monument. The kids laughing outside in ninja headbands. The smell of Ichiraku's ramen wafting through the air.
"I'm in... Konoha?"
A loud chime rang in his ears.
> DING!
[Welcome, User.]
You have activated the Ultra Gainz Exercise System.
This system rewards modern physical training with chakra and physical power growth.
Train hard. Earn power.
Slack off and suffer.
"What the actual—"
Before he could even finish the thought, a prompt popped into his vision like an RPG overlay.
> Daily Goal:
100 Push-ups
100 Sit-ups
100 Squats
10km run
Reward: +2 Strength, +1 Chakra Control, Unlock [Basic Chakra Sensing]
Penalty for Failure: 24 Hours of Stat Lock + Muscle Fatigue Debuff
He blinked. "Wait. This is that kind of system?"
A memory flashed: Saitama. Rock Lee. Anime protagonists who trained into gods.
But he wasn't just any anime fan anymore. He was here—in the Naruto world—with a cheat system that worked through sweat and pain.
Then he heard a voice from the street.
"Oi! New kid! You're gonna be late to the Academy! Naruto's pulling another prank!"
The MC stood up slowly, cracking his neck.
"So I'm a student now… and my cheat is gym reps? Alright, bet."
He stepped outside, stretching as the sun hit his face.
Time to train like his life—and the entire ninja world—depended on it.