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Boku wa Imōto ni Koi o Suru: Secret Sweethearts - Kono Koi wa Himitsu (OAV)

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Alternative title:
I Love My Younger Sister
Я люблю свою младшую сестрёнку (Russian)
僕は妹に恋をする シークレット・スウィートハート この恋はひみつ (Japanese)
Genres: drama, romance
Themes: incest
Objectionable content: Significant
Plot Summary: 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. He had even applied to attend a boarding school in another city to take him far away from Iku. Yori lost his resolve to stay quiet about his feelings when Iku started to talk about having a boyfriend and going on dates. Now Yori want to have his little sister and he confessed. Iku loves her big brother and wanted them to stay together, so Iku is willing to anything to keep them together. But Yori wanted to have Iku as a lover, not as a sister loyal to her twin.
User Ratings: 612 ratings have been given [details]
 Masterpiece: 41 votes (sub:39, dub:1, others:1
1 Arabic subtitled
 Excellent: 76 votes (sub:69, dub:2, raw:1, others:4
2 Spanish subtitled
1 French edited dub
1 French subtitled
 Very good: 126 votes (sub:113, dub:4, ?:1, others:8
6 Spanish subtitled
1 Portuguese subtitled
1 French subtitled
 Good: 126 votes (sub:112, raw:5, dub:4, ?:2, others:3
1 Portuguese subtitled
1 French subtitled
1 Italian subtitled
 Decent: 113 votes (sub:107, raw:2, dub:2, others:2
2 Spanish subtitled
 So-so: 46 votes (sub:41, dub:2, ?:1, others:2
1 Spanish subtitled
1 Russian subtitled
 Not really good: 31 votes (sub:29, others:2
2 Spanish subtitled
 Weak: 25 votes (sub:21, dub:1, raw:1, others:2
1 Portuguese subtitled
1 French subtitled
 Bad: 17 votes (sub:17)
 Awful: 5 votes (sub:4, dub:1)
 Worst ever: 6 votes (sub:6)
Seen in part or in whole by 1090 users, rank: #1125 (of 9674)
Median rating: Good
Arithmetic mean: 6.748 (Good−), std. dev.: 2.0751, rank: #4913 (of 9803)
Weighted mean: 6.617 (Good−), rank: #5266 (of 9803) (seen all: 6.65 / seen some: 4.92 / won't finish: 2.36)
Bayesian estimate: 6.635 (Good−), rank: #4860 (of 7426)
Running time: 50 minutes
Number of episodes: 1
Episode titles: We have 1
Vintage: 2005-05-18
Release dates: We have 2
Ending Theme:
"Ai ga Hoshii" (愛が欲しい) by Shion
Official website:
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Japanese staff
Japanese cast
Director: Yukiyo Teramoto
Screenplay: Touko Machida
Storyboard: Yukiyo Teramoto
Music: Susumu Ueda
Original creator: Kotomi Aoki
Character Design: Mayumi Nishimoto
Art Director: Makoto Dobashi
Animation Director: Mayumi Nishimoto
Sound Director: Hiroyuki Hayase
Director of Photography: Eriko Hamada
Executive producer: Yoshiaki Tsujimoto
Color setting: Harue Yoshida
Finish Animation:
Akiko Ueda
Yoko Miyamoto
In-Between Animation:
Maiko Takeyama
Nahoko Kosugi
In-Between Check: Junko Ono
Planning Assistant: Keiichi Yamakawa (Shogakukan)
Production Advancement: Kumiko Yasumoto
Akira Namiki
Yoshiko Yamashita (Broad Media Studio)
Sound Effects: Yasuyuki Konno (Suwara Production)
Sound Production Manager:
Daisuke Iguchi (Broad Media Studio)
Midori Shimazawa
Video Editing: Akihiro Kanetaka
Mai Nakahara as Iku Yuuki
Mayuko Iwasa as Iku Yuuki (special cast)
Satoshi Matsuda as Yori Yuuki (special cast)
Showtaro Morikubo as Yori Yuuki

Kōsuke Toriumi as Haruka Yano
Tomoko Kawakami as Tomoka Kusunoki

Asami Sanada as Female student B
Daisuke Namikawa as Male student A
Reiko Takagi as Iku Yuuki (young)
Sakiko Tamagawa as Saki Yuuki (mother)
Takurō Nakakuni as Male student B
Tohru Furusawa as Shunpei Yuuki (father)
Tomoko Kawakami as Yori the dog
Tomoko Matsuno as Female student A
Yukiko Takaguchi as Angel's voice
Japanese companies
Finish Animation:
Studio Step
In-Between Animation: Orange
Key Animation: Studio Victory
Photography: Vega Digital
Recording Studio: Broad Media Studio
Sound Production: Broad Media Studio
Video Editing: Tokyo Laboratory

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