Harmonium

Toshio (Furutachi), his wife Akie (Tsutsui), and their daughter Hotaru (Shinokawa) live a banal existence. Toshio operates a machine shop in his garage when suddenly an old acquaintance of Toshio's, Yasaka (Asano) arrives to help out at the shop. Hotaru practices the harmonium but is obviously a novice. Yasaka had just been released from prison and so without a permanent place to stay, Toshio takes him in as an assistant. Yasaka bonds with Hotaru, helping her with her music, and being helpful around the shop and house. Yasaka reveals to Akie that he was imprisoned for eleven years as a result of murder, asks for forgiveness for not mentioning this earlier, and slowly Yasaka becomes a greater part of the family. Yasaka and Akie have some romantic feelings for each other, and Toshio becomes suspicious as the family goes on a river trip. The movie also reveals that Yasaka is bitter about taking the blame for the murder, which Toshio participated in. Read more on Wikipedia.