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"H2O" Takuma and Hayami are saved from the village elder's wrath when Hotaru arrives with the police, who place her grandfather in jail. Oddly, Takuma's mentality has experienced a drastic change, shifting to a child-like state, with the belief that Hayami is his mother. He is sent to Tokyo, for further treatment, and is accompanied by Hayami. Life goes well for the two, though Takuma still recalls Hayami to some extent. On one day, Hayami leaves Takuma's side to go to the aid of a child on the railroad tracks, leading Takuma to remember that his mother had never committed suicide, but had attempted to save a life.Upon realising this, he regains his sight and mentality, but is unable to stop Hayami from crossing in front of an oncoming train. Years pass, and Takuma returns to the village. After building a windmill on the very same hill where he met Hayami, he thinks of her, and encounters a younger version of Otoha, who brings Hayami to him.