Isekai Munchkin: HP 1 no Mama de Saikyou Saisoku Dungeon Kouryaku
Otherworldly Munchkin: Let’s Speedrun the Dungeon with Only 1 HP!·異世界マンチキン ーＨＰ１のままで最強最速ダンジョン攻略ー
Yukito Kirihara, a 16-year-old, lives with his 14-year-old sister Sana, whom he deeply cares for. When an ogre appears at their home seeking Sana, Yukito tries to protect her and is killed. A mysterious woman offers him a chance at reincarnation, giving him a character sheet from a strange book. He discovers Sana is also listed in the book and decides to find and save her, despite having only 1 hit point to accomplish this.