Suddenly, high school student Subaru Natsuki has been summoned to another world on the way back from the convenience store. With the biggest crisis of his life being summoned to another world, and with no sign of the one who summoned him, things become even worse when he is attacked. But when he is saved by a mysterious, silver-haired girl with a fairy cat, Subaru attempts to return the favor by helping her track down something that was stolen from her. When they finally manage to get a clue, Subaru and the girl are attacked and killed by someone. Subaru then awakens in the place he was summoned and notices he gained the ability “Return by Death” and has become a helpless boy that only has the ability to rewind time to a certain point by dying. Beyond the despair, can he save the girl from the fate of death?

Louis Valentine, a villainous noble, has one ultimate goal: to fall into an eternal slumber. Louis has experienced countless cycles of dying and rewinding, with causes of death ranging from the mundane to the tragic. After repeating this cycle of life and death innumerable times, Louis eventually stopped seeking to live and instead lived solely with the aim of dying. In his previous life, on a whim, he chose to end it all through suicide. He didn’t expect much to change, and as expected, he rewound after death, as he always did. “So, even suicide doesn’t work. Fine, I’ll just enjoy myself and die like always.” Determined to indulge himself and die on his own terms, Louis was surprised when his new life turned out to be different from all the rest. For some reason, the “Reapers” in his life, including his fiancée, began to pay him unusual amounts of attention. “Something’s not right here.” This is the story of a boy who, by committing suicide, strayed from the path of his usual cycles, finding himself surrounded by people who unexpectedly care for him while continuing his pursuit of eternal death.

Abandoned, alone, and driven by ruthless justice—all for the sake of humanity. Defeated by the Demon King, the Hero finds himself reincarnated as none other than the Demon King’s son. However, his true identity…