- Country: Japan
- Genres: Animation, Drama, Romance
- Release: 2005-05-18
- Director: Mayumi Nishimoto
- Writers: Kotomi Aoki , Touko Machida
- Language: Japanese
- Stars: Tôru Furusawa , Tomoko Kawakami , Tomoko Matsuno , Showtaro Morikubo , Mai Nakahara , Takurou Nakakuni , Daisuke Namikawa
- Runtime: 49 min
- Awards: N/A
- AKA: Apaixonado por Minha Própria Irmã (Brazil) , Boku wa imouto ni koi wo suru: Secret sweethearts - Kono koi wa himitsu , 僕は妹に恋をする (Japan)
- Plot: Yori and Iku are siblings who developed romantic feelings for each other. They will need to fight all the odds for their forbidden love.
- IMDB:tt1020870
Boku wa imouto ni koi wo suru: Secret sweethearts – Kono koi wa himitsu Cast · · · ALL
Mayumi Nishimoto
Director
Showtaro Morikubo
Yori Yuuki (voice)
Mai Nakahara
Iku Yuuki (voice)
Tomoko Kawakami
Tomoka Kusunoki (voice)
Sakiko Tamagawa
Saki Yuuki (voice)
Tôru Furusawa
Shunpei Yuuki (voice)
Kohsuke Toriumi
Haruka Yano (voice)