Why Does Nobody Remember Me in This World?

Kai lives in a world where humanity already won the decisive war, where the enemy races were sealed away, and where his job is supposed to be simple: stand watch and keep the peace that earlier heroes earned. Then reality rewrites itself in front of him. The victory disappears, the seal becomes a symbol of defeat, and the world acts like the person who mattered most, the human hero Sid, never existed at all. Kai is the only one who can still remember the original history, which makes him a stranger in his own life, because even his place in the world shifts and nobody recognizes him the way they should. In the middle of that collapse, Kai meets a mysterious girl named Rinne, another irregularity who does not fit the rewritten rules. Their meeting is not comforting, it is volatile, full of mistrust and confusion, but it gives Kai a direction: if the world can be overwritten once, it can be corrected. With the old hero erased, Kai takes on the burden of becoming the one person willing to fight for a timeline that nobody else believes existed. That means surviving in a reality where humans are subjugated, where the other races hold power openly, and where every institution Kai relied on now serves someone else. He has to learn which memories are useful, which are traps, and how to act like a hero when the world’s story refuses to name one. The journey becomes part investigation and part rebellion, with Kai chasing the cause of the rewrite while protecting Rinne and the fragile proof that the «true» world was not just a dream. Each step forward risks making the new reality snap back harder, but Kai keeps moving because forgetting would be the final defeat.