Otherworldly Munchkin: Let’s Speedrun the Dungeon with Only 1 HP!

Sixteen-year-old Yukito Kirihara’s world revolves around one person: his fourteen-year-old sister, Sana. He cherishes her above all else, a bond that is put to the ultimate test when an impossible nightmare materializes outside their window. A towering ogre appears with a singular target in mind—Sana. Without a moment's hesitation, Yukito throws himself into the path of danger to shield her, sacrificing his own life in the process. Death, however, is not the end of his journey. In the void beyond, Yukito encounters a mysterious woman who offers him the extraordinary chance at reincarnation. She presents him with a peculiar book containing a character sheet, effectively transforming his existence into something resembling a role-playing game. Yet, this second chance comes with a harrowing limitation: he is granted only a single hit point, leaving absolutely no margin for error. The true shock arrives when Yukito discovers that Sana’s name is also recorded within the enigmatic tome. Realizing she has been dragged into this bizarre system alongside him, his objective becomes crystal clear. Armed with nothing but a fragile thread of life and an unbreakable resolve, Yukito sets out to locate his sister and secure their survival, determined to conquer whatever challenges lie ahead even if a single mistake means permanent death.