Boku wa Imouto ni Koi wo Suru
Secret Sweethearts
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Boku wa Imouto ni Koi wo Suru

Alternative Titles

Synonyms: I Love My Little Sister
Japanese: 僕は妹に恋をする
English: Secret Sweethearts
More titles


Type: Manga
Volumes: 10
Chapters: 60
Status: Finished
Published: Dec 20, 2002 to Jun 20, 2005
Genres: Comedy Comedy, Romance Romance
Theme: School School
Demographic: Shoujo Shoujo
Serialization: Sho-Comi
Authors: Aoki, Kotomi (Story & Art)


Score: 6.841 (scored by 34863,486 users)
1 indicates a weighted score.
Ranked: #110862
2 based on the top manga page. Please note that 'R18+' titles are excluded.
Popularity: #2428
Members: 8,459
Favorites: 76


Ranked #11086Popularity #2428Members 8,459
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Volumes: /10
Chapters: /60


Yori's attitude has changed. He and his twin sister, Iku, used to be inseparable as children, but lately Yori's been different—eager to be apart from Iku. Iku worries that he hates her, but the truth is far more scandalous. Now, Yori would risk losing everything to have his little sister. Iku loves her big brother enough that she would never risk losing him, and so she'll do what it takes to keep them together... but Yori doesn't want to have her that way—as a sister dedicated to her twin. Can Iku ever love Yori not as a brother but as a man?

(Source: ShoujoMagic)


Boku wa Imouto ni Koi wo Suru won the Shogakukan Manga Award in the shoujo manga category in 2008.

The series was published in Spanish by Editorial Ivrea, in French by Soleil, and was adapted into a live-action movie in 2007.



Dec 29, 2008
My inital review of this manga was rather poor, but now I'm glad that I've finally finished the whole series. I have to say that the later chapters have the "roller-coaster" plot that kept me going.

Yori's love for Iku was that of sacrifice, for a better future for her; while Iku had to find her own strength and determination to prove her love for Yori. Their deep love came with a hefy price tag; alongwith challenges which will test if their love was true.

The author left the ending to reader's imagination; thou not the perfect ending but I think it is good enough.

Nov 8, 2008
Preliminary (23/60 eps)
This is a beautiful story about a twin brother and sister falling in love. Even though some people may not be into that kind of love taboo, this story is so great that you can't help but love the main couple!
Iku, the girl twin, doesn't at first reciprocate her Yori's , her brother's, liking for her and is very confused with his and her feelings... but she doesn't want to lose her big brother who has seemed to be drifting away from her lately. And with her friend Tomoka liking her brother as well, everything is a mess... but that doesn't stop Yori from ...
Aug 4, 2014
Mixed Feelings
When it comes to romance stories, I've always enjoyed "forbidden love". Be it between the same sex, step-siblings, student & teacher or cousins; I tend to enjoy these flavours over the vanilla stuff. So here I have Boku wa Imouto ni Koi wo suru. A Shoujo, Romance, Drama themed around the forbidden love between siblings and yet I did not enjoy this as much as I hoped.

Although Boku wa Imouto is a shoujo manga, it mostly follows the point of view of our male protagonist Yori Yuuki, where it is immediately apparent that he feels strongly for his twin sister Iku. So strongly in fact ...

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Recent News

Recent Forum Discussion

Poll: Boku wa Imouto ni Koi wo Suru Chapter 58 Discussion
ClawViper - Jul 3, 2014
21 repliesby pup1 »»
Feb 16, 2023 9:38 PM
Guys, I think there was originally meant to be a different ending. Also, spoilers ahead, don't read this till you've finished the whole thing.
pup1 - Feb 16, 2023
0 repliesby pup1 »»
Feb 16, 2023 1:50 AM
My god the mother
Jak - Oct 31, 2016
5 repliesby RarestProGamer »»
Jan 2, 2017 11:49 PM
Poll: Boku wa Imouto ni Koi wo Suru Chapter 56 Discussion
ClawViper - May 6, 2014
3 repliesby Sapewloth »»
Mar 25, 2016 5:59 AM
Poll: Boku wa Imouto ni Koi wo Suru Chapter 51 Discussion
KingCez - Jan 30, 2014
2 repliesby Sapewloth »»
Mar 25, 2016 4:34 AM