This introduces the genre's primary mechanic: .
In The Misfit of Demon King Academy , the hero reincarnates with full knowledge. In Erased , a manga artist goes back to 1988 to save his classmates. In Remake Our Life! , a game developer wakes up as a college student ten years in the past. gaki ni modote yarinaoshi
But for a moment, he feels lighter. He reviews the mistakes of yesterday, not with despair, but with the cold calculation of a gamer planning a second playthrough. This introduces the genre's primary mechanic: