Keisuke Niijima lost his beloved wife, Takae, 10 years ago. Since then, he doesn't feel alive and is seen as a gloomy man. The only family Keisuke is left with is his only daughter, Mai. Keisuke wants Mai to be happy but he has not done anything for his daughter other than providing living expenses. The father and daughter's time stopped 10 years ago. They are living in the same house but live very separate lives and do not communicate well. One day, an elementary school girl appears in front of Niijima's house and claims that she is the reincarnation of Takae
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Yeah, let's not pretend like we won't watch this. Let's all go to jail together, lol.

I know people who read the manga keep saying "this is actually a wholesome story", but the trailers really do not help this anime's premise