Eyes of a Child(2005)

Kodomo no Hitomi

Misaki has been living with his child alone while he grows hatred to his older brother, Hitoshi. But one day he finds him infront of his house with a strange man saying that Hitoshi encountered an accident, lost his memories and now has a mindset of a 6-year old Hitoshi! Will Misaki be willing to accept Hitoshi as his older brother or as a...?