Hiroshi Ando : Boku wa imouto ni koi wo suru (2007)
'Yori and his twin sister Iku used to be very close as children but lately Yori has grown colder toward Iku and is always eager to stay away from her. Iku was confused by Yori's attitude. Actually Yori is in love with Iku and that forbidden love is causing Yori sleepless nights since Yori and Iku are sharing the same room with bunk beds. Yori tried to ease his intense desire for Iku by bedding Iku's best friend. Yori lost his resolve to stay quiet about his feelings when Iku started to talk about having a boyfriend and going on dates.'