Jisatsu Shitai Onna Yuusha ni Maou ga Komarasareteimasu!

A high school girl named Mana, who attempted suicide due to despair, is unwillingly brought back to life in a different world as an immortal female hero. Seeking a way to end her immortality, she goes to the Devil's castle. Since the devil is unable to permanently kill her, Mana threatens him, saying that if he cannot kill her, she will kill him instead. The story is described as a comedic take on this situation.