Keisuke Niijima has lived in grief since his wife, Takae, passed away 10 years ago. But when a young girl visits, claiming to be Takae reincarnated, Keisuke and his daughter, Mai, are drawn into a miraculous reunion. As the girl reveals intimate details only they could know, the Niijima family slowly begins to heal, rediscovering love and warmth in the most unexpected way.

Yuuta Asamura gets a new stepsister after his father remarries, Saki Ayase, who happens to be the number one beauty of the school year.