Dogs & Cats (2004)

Directed by Nami Iguchi

Suzu lives with Furuta, her fiance, but one day she leaves home without saying a word. She moves into the apartment of her friend Abe, but he has gone abroad and Yoko now lives in his apartment. Suzu and Yoko, who have known each other since childhood and have both always loved Furuta, thus find themselves sharing the same home.