Boku wa Imouto ni Koi wo Suru

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Alternative Titles

Synonyms: I'm My Little Sister's Secret, I'm in Love With My Little Sister
Japanese: 僕は妹に恋をする


Type: OVA
Episodes: 1
Status: Finished Airing
Aired: May 18, 2005
Licensors: None found, add some
Source: Manga
Genre: RomanceRomance
Demographic: ShoujoShoujo
Duration: 49 min.
Rating: R+ - Mild Nudity


Score: 6.191 (scored by 2420424,204 users)
1 indicates a weighted score.
Ranked: #84832
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #3399
Members: 43,419
Favorites: 99

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Ranked #8483Popularity #3399Members 43,419
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Episodes: /1


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.

Characters & Voice Actors


Teramoto, Yukiyo
Director, Episode Director, Storyboard
Hayase, Hiroyuki
Sound Director
Aoki, Kotomi
Original Creator
Machida, Touko


Opening Theme

Apple Music
Amazon Music
Youtube Music
"Boku Wa Imouto Ni Koi Wo Suru - OP" by Susumu Ueda

Ending Theme

"Ai ga Hoshii" by Shion


Feb 22, 2009
Ok I've watched close to 80 different anime, all types, and one thing I've learned is that you cant judge until you watched the whole thing. However, when I heard of "I Love My Younger Sister", I was skeptical. I mean, there are some messed up anime out there, but a story about twins not wanting to love each other as siblings but as lovers? Now thats messed up, but when I saw reviews and thought about it I decided, "What's the harm?". And when I finally watched it, Wow! What a amazing story! Ok, it was beyond depressing, but it was still really good. ...
Mar 26, 2008
Mixed Feelings
Im not sure much is to be said about this story. To be honest it was a bit generic. "Sweet innocent lil sister or in this case twin sister, he loves her, he struggles with it, she comes to realize it. Oh but what about Kami-sama!
They get over it..screw the gods, make out, the end."
Not to say its not a cute story and the art was pleasent to the eye.
The music was also cute ,but theres wasn't much to it. Its pretty short so
i guess that shouldve been my first clue not expect too much.
Check it out on youtube if ...
Jan 10, 2017
There's a reason incestual relationships are rarely taken seriously in anime. It's a hard subject to portray with sincerity, and if not handled properly can be the source of contention among the viewership. Boku wa Imouto runs into that exact problem doing a poor job of selling it's authenticity and even worse of providing the viewer with any meaningful takeaway from the topic as a whole in society.

The characters, to put it bluntly, are awful. Yori is a moody brat with rapist tendencies who repeatedly forces himself onto the person he claims to love most of all. Iku has no will of her own, ...

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Recent News

Recent Forum Discussion

Poll: Boku wa Imouto ni Koi wo Suru Episode 1 Discussion
Teddy - Jul 18, 2008
46 repliesby DebiPS »»
Jun 16, 9:03 AM
Forbidden Love?
Lilly1x - Feb 8, 2009
15 repliesby FNH04 »»
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