Isekai Munchkin: HP 1 no Mama de Saikyou Saisoku Dungeon Kouryaku

In the anime Isekai Munchkin: HP 1 no Mama de Saikyou Saisoku Dungeon Kouryaku, a young man named Yukito Kirihara sacrifices himself to protect his beloved younger sister, Sana, from a monstrous threat. Reborn in a perilous fantasy world governed by RPG rules, he discovers a shocking condition: his character sheet is permanently locked at a mere 1 HP.

Driven by the unwavering goal to find and save Sana, who was also transported to this world, Yukito must navigate treacherous dungeons and formidable enemies. The anime explores themes of sacrifice, ingenuity, and familial bonds as he leverages his unique, crippling limitation to become an unstoppable force, redefining what it means to be the strongest in a land of magic and monsters.