Boku wa imouto ni koi wo suru Secret sweethearts - Kono koi wa himitsu
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
Daisuke Namikawa, Mai Nakahara, Reiko Takagi, Sakiko Tamagawa, Shotaro Morikubo, Tôru Furusawa, Tomoko Kawakami