Tenjou Yuuya has endured relentless bullying throughout his school years. Living with his grandfather and attending classes, he faces constant harassment until he finally takes a break from school to recover. During his absence, while tidying his grandfather's collection of artifacts from around the world, Yuuya stumbles upon a hidden door concealed among the treasures. Driven by curiosity, he opens it—only to discover a passage into an entirely different world. This extraordinary realm grants him cheat abilities that transform him completely. Armed with unprecedented power, Yuuya returns to the real world as a changed person, no longer the victim he once was. Now, he navigates his second chance at life, juggling supernatural abilities with everyday school life, unexpected romantic encounters, and the challenge of fitting in where he once suffered.