Naruto: I’m Atomic

Yagami just wants to live a quiet ninja life. Unfortunately, the world refuses to cooperate. Every “simple mission” turns into a disaster. Every suspicious ruin hides something illegal. And every enemy he meets somehow has way too much confidence for someone about to lose. Armed with absurd sword skills, questionable patience, and a talent for breaking situations by existing near them, Yagami keeps stumbling into problems he definitely did not sign up for. As Yagami’s strength deepens, so do the mysteries surrounding him. Why do certain events feel wrong? Why do some encounters seem oddly familiar? And why does the future feel… unstable? Ancient technology? Immortal enemies? Things that absolutely should not be moving? Not his fault. Probably. As the shinobi world starts malfunctioning around him, people slowly realize one thing: If Yagami shows up… something is about to go very, very wrong. Spectacularly so. For everyone else. — Description from novelcodex.org