Tập 12: Tetsu tin rằng Karada đã trở thành người lớn khi Kotomi rời đi cùng một mảnh đá ước.

12

Eventually Tetsu believes that Karada was turned into an adult. As Kotomi leaves the town to see her father, she gives Shouko a piece of the wishing stone she had. It is implied that they reversed the age switch, and the last shot is of the wishing stone fading into dust. (Source: Wikipedia)