Tsuma, Shougakusei ni Naru.

Keisuke Niijima lost his loving wife Takae ten years ago. Since then, he hasn’t felt alive and is regarded as a depressed man. Keisuke’s only remaining family member is his daughter Mai. Keisuke wants Mai to be happy, yet he has only provided for her basic needs. The father and daughter’s time halted ten years ago. They reside in the same house, but have totally different lives and do not communicate effectively. One day, an elementary school girl emerges in front of Niijima’s house, claiming to be Takae’s reincarnation.