After receiving a heart transplant, Haru Inoue finds himself with memories that do not belong to him. For days, he has been dreaming about the same scenario: a bus ride and an unfamiliar girl sitting across him. Initially, Haru brushes it off as a case of inherited memories, until another patient catches his attention by screaming for help and fighting the hospital staff. The strange incident sets off a chain of events that reveals something more sinister than Haru could have ever imagined.

[Written by MAL Rewrite]