Taito Kurogane was a child when the vampire Saitohimea marked him with a curse that brings him back from death, unless he is killed seven times inside fifteen minutes. Years later, a leg injury has ended his karate and left him certain he is an ordinary high schooler, with no memory of her at all. Dying to save a classmate shakes her name loose, and Himea returns to a boy now bound to her and to whoever put her behind bars.