After a powerful earthquake reduces their school to ruins, only four students remain: childhood friends Fubuki and Shinichi, their classmate Takahaki, and a junior girl. Isolated amid the wreckage, fragile alliances form and fray as Takahaki plants seeds of suspicion, claiming Shinichi’s affections may belong elsewhere. Fubuki’s trust wavers under the mounting pressure, leaving Shinichi to navigate doubt and confusion about the bonds that once seemed unbreakable.