[Japan] Natsu Left Home (2013)
A struggling writer, Akio, has a small but happy family life with his wife. One day in his slump, Natsu, his stepsister from his father’s second marriage, appears. Running away from home, she makes herself settled in the closet of Akio and his wife’s bedroom. With Natsu literally now a dark secret, Akio has no choice but to accept her. But every time his wife goes out, Natsu jumps on him. Reluctantly at first, he gradually falls for her.
Japanese Title: Imouto no Natsu
English Title: Natsu Left Home
Director: Sadao Jo
Cast: Rika Hoshimi / Natsumi Horiguchi / Yasuki Isoda / Mutsuo Yoshioka