Keisuke niijima's wife, takae, passed away 10 years ago. since then, he has been seen as a gloomy man who feels unfulfilled in life. the only family members left to him are his daughter, mai, and himself. despite this, the father-daughter relationship between them stopped 10 years ago, with them living separate lives and communicating poorly. one day, an elementary school girl appeared at niijima's house, claiming that she was the reincarnation of takae.
Episode 2 received an advance release on U-NEXT and Anime Hodai on October 6, 2024. Each subsequent episode was streamed 7 days in advance of the TV broadcast on U-NEXT and Anime Hodai.