Desiring to take her own life, a noticeable girl stands on the edge of a bridge. However, a bulky, enigmatic man with a disfigured forehead suddenly intervenes; to her surprise, he enthusiastically jumps in front of an oncoming train. When the girl tries to find the man's corpse, she discovers his severed head from which his body is regenerating. Taken aback by this sight, she learns that he is an "Undead," and he ultimately wishes to die. Subsequently, the girl reveals that she also has an extreme condition: anyone who touches her bare skin will immediately be met with misfortune. Because of this, she has lived an isolated and dejected life ever since she was a child. Eager to know more about her ability, the eccentric man pursues the girl in hopes of teaming up—but a mysterious organization seems to have other plans in store.