Boku wa Imōto ni Koi o Suru | |
Cover of Boku wa Imōto ni Koi o Suru volume 1 as published by Shogakukan
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僕は妹に恋をする | |
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Genre | Drama, Romance, Incest |
Manga | |
Written by | Kotomi Aoki |
Published by | Shogakukan |
Demographic | Shōjo |
Magazine | Shōjo Comic |
Original run | May 26, 2003 – August 26, 2005 |
Volumes | 10 |
Original video animation | |
Boku wa Imōto ni Koi o Suru: Secret Sweethearts – Kono Koi wa Himitsu | |
Directed by | Mayumi Nishimoto |
Studio |
Shogakukan Vega Entertainment Zoom Enterprise |
Released | May 18, 2005 |
Runtime | 50 minutes |
Manga | |
Boku no Hatsukoi o Kimi ni Sasagu | |
Written by | Kotomi Aoki |
Published by | Shogakukan |
Demographic | Shōjo |
Magazine | Shōjo Comic |
Original run | December 20, 2005 – August 26, 2008 |
Volumes | 12 |
Live-action film | |
Directed by | Hiroshi Ando |
Produced by | Youichiro Onishi |
Written by |
Hiroshi Ando Saeki Nejime |
Music by | Otomo Yoshihide |
Studio |
Shogakukan Toshiba Entertainment Zoom Enterprise Nippon Television |
Released | January 20, 2007 |
Runtime | 122 minutes |
Boku wa Imōto ni Koi o Suru (僕は妹に恋をする?, lit. I'm in love with my sister) (abbreviated to BokuImo) is a manga series by Kotomi Aoki. Originally serialized in Shōjo Comic, the individual chapters were published in ten tankōbon volumes by Shogakukan from May 2003 until August 2005. The series focus on fraternal twins Yori and Iku, who fall in love with one another despite being siblings.
The manga series was adapted into a one-episode original video animation that was released in May 2005 and a live-action film starring Jun Matsumoto and Nana Eikura that premiered in Japan on January 20, 2007.
A ten volume spin-off series focusing on Yori's upperclassmen Takuma Kakinouchi and his childhood sweetheart Mayu Taneda was serialized in Shōjo Comic from December 2005 through August 2008. It is called Boku no Hatsukoi o Kimi ni Sasagu (abbreviated to BokuKimi) and means "I Give My First Love to You".
Yori and Iku Yuki are twin brother and sister, who have been extremely close since they were born. During their childhood, Yori used to tell their parents that he would marry Iku. While their parents brushed this off as an innocent childhood fantasy, Yori knew that his feelings were more than an innocent crush on his sister. When they are fifteen, his feelings have grown stronger than before. Yori has by now understood that he has fallen deeply and hopelessly in love with Iku, which makes him feel ashamed. Due to that they share a bedroom, Yori finds it harder and harder to resist his feelings for her, so he begins to distance himself from her and acts coldly to her. Iku is hurt and shaken by his harsh treatment towards her, but she tries to remain cheerful and make him smile. One day during school, Yori gets into a fight after a classmate makes fun of Iku, and gets injured. Tomoka Kusunoki, Iku's best friend, tends to his injury and tries to comfort him. In midst of this, she suddenly kisses him and professes her love to him. When she asks him if she is good enough for him, he sees this as an opportunity to surpass his feelings for Iku. He proceeds to kiss her and has sexual intercourse with her at a hotel. This encounter, however, does nothing to help him forget his lust for Iku. Tomoka mistakenly thinks that Yori reciprocates her feelings and calls him her boyfriend. Yori, however, decides to hide this from Iku so she won't get upset. He later tries a new strategy: go to an out-of-town high school. Days later, Yori and Iku get into a fight after Iku talks about her dreams of having a boyfriend and going on dates. Yori gets really mad about this and yells at Iku to shut up. Iku does but starts crying. While she is crying, he kisses her, which shocks her, and he confesses his love to her. Iku is taken aback by his confession and rejects his advances because he is her brother. However, she sees the sadness on his face and realizes that, while she is uncertain if she loves him more than a brother, she may lose him by rejecting him. She kisses him and feels uncomfortable by it, which Yori notices and tells her to wait until she is sure of her love for him. Over the next several days, they try to begin an intimate relationship, with Iku slowly growing adjusted to Yori's advances, and keeping their parents in the dark. Haruka Yano, Yori's best friend, immediately notices the twins' closeness but doesn't tell them. Iku continued to be torn between her guilt of committing incest and her desire to remain together with Yori. Her guilt, however, completely disappears when she discovers that Yori is planning to enroll in a different high school and that he has been seeing Tomoka. She tries to have sex with Yori, but in the process, he rejects her because she still doesn't love him yet. The next day, as she sees Tomoka clinging to Yori, Iku realizes that she has finally fallen in love with Yori. After confessing to him, they skip school and flee to a church, where they remember playing at when they were little. They try to have sex in the church, but Iku tells him to stop because she feels that God is watching them. Yori agrees and decide to go home.