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Boku wa Imouto ni Koi o Suru  
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From ShoujoMagic:

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?

Boku wa Imouto ni Koiwosuru received the Shogakukan Manga Award for shoujo manga in 2008.


Related Series

Associated Names
僕は妹に恋をする Secret Sweethearts
Boku wa Imouto ni Koi wo Suru
Boku wa Imouto ni Koi wo Suru - Secret Sweethearts
I Love My Little Sister
I Love My Little Sister - Secret Sweethearts
Lazos Prohibidos (Spanish)
Secret Sweethearts (French)

Groups Scanlating
Divine Sanctuary
JShoujo Scans
Manga Abyss
Newchie Scans

Latest Release(s)
v.10 c.58 + Extras (end) by JShoujo Scans (222d ago)
v.10 c.57 by JShoujo Scans (236d ago)
v.10 c.54-56 by JShoujo Scans (278d ago)
Search for all releases of this series

Status in Country of Origin
10 Volumes (Complete)

Completely Scanlated?

Anime Start/End Chapter
Ends at Vol 3, Chap 16

User Reviews

2 topics, 14 posts
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User Rating
Average: 6.8 / 10.0 (374 votes)
Bayesian Average: 6.82 / 10.0
 22% (81 votes)
 11% (41 votes)
 17% (62 votes)
 14% (54 votes)
 10% (39 votes)
 6% (23 votes)
 3% (11 votes)
 3% (11 votes)
 2% (8 votes)
 12% (44 votes)

Last Updated
October 31st 2014, 5:18am PST



Category Recommendations





Original Publisher

Serialized In (magazine)
Sho-Comi (Shogakukan)

Licensed (in English)

English Publisher

Activity Stats (vs. other series)
Weekly Pos #702 increased(+61)
Monthly Pos #859 increased(+26)
3 Month Pos #907 increased(+64)
6 Month Pos #951 decreased(-183)

List Stats
On 1160 reading lists
On 628 wish lists
On 372 completed lists
On 191 unfinished lists
On 273 custom lists

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Forum Posts
How is this a spin-off? 687 days, 15 hours, 41 minutes ago
Spoilers Please! 785 days, 12 hours, 45 minutes ago

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User Comments [ Order by time added ]

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Latest Chapter so far.   
Rating: N/A
by janie0016
August 11th, 2010, 10:13am
Leave it to Yori to find a way to teach that bitch a lesson!
Shit! Reformatting the computer. Wise decision dude!
I really feel like they're not brother and sister in reality though (I know they were said to be twins, but it's a shoujo manga, anything can happen). I think they're actually cousins or something. I'm pretty sure that you can legally marry your cousin in Japan.

Seriously, I was so mad when I was reading the part that they got caught and Yori had to kiss his ex-girlfriend. Then, I was shouting at the top of my lungs... EFFFFFFFFF.

Now, I must say that I am satisfied. There are three volumes left... I'm so excited to actually finish this. Hopefully, they'll scanlate it until the end. love you scanlators <3
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Don't overreact   
Rating: 10.0 / 10.0
by 1122shadows
October 28th, 2011, 5:07pm
It's a good story, one of my favorites but you might have to rethink how you view love. Yori and Iku relationship is a very passionate love, if you can't handle it then don't read it. Also, from a religious view point, if God created the world with Adam and Eve, then He allowed incest when their children "populated" this world. But if you believe in evolution then even monkeys indulge in incest. LOL.

... Last updated on October 28th, 2011, 5:24pm
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Decent read   
Rating: 10.0 / 10.0
by Hajiwonkim
December 6th, 2012, 11:37pm
I agree with 1122shadows, people are overreacting just because there's incest on the description, when in fact this is good story which deals with taboo. Although I don't like how incest is portrayed in other mangas, this manga is an exception. This time, I support the couple's love for each other & sympathize with their struggles & sufferings because the society will never accept their love, thus they cannot be on a normal relationship together. You'll understand the depth of the story if you are an open minded reader. Anyway I liked how the mangaka ended this series. I ONLY recommend this series to mature readers, so if you hate smut & incest please don't read this manga.
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Rating: 6.0 / 10.0
by workshyslacker
October 19th, 2010, 1:45pm
Spoiler (highlight to view)
... is not the same as "SHE"-LOVER. It's a "see" got that? Right? Ahem...

Apart from that... wierd and creepy and that's nothing against the incest issue because at least Angel Sanctuary was better. And why is the guy such a stalker, and why is she so weaaakkkk?

There's femininity and then there's stupidity...

I don't understand anyone's motivations.
Spoiler (highlight to view)
Yori doesn't even bother to hide the fact that he's sleeping with his sister and spills all to Yano - after that all that angst over hiding his incestuous feelings - those same feelings that drove him to bang his sister's classmate
that I can't sympathise with him at all. And she's so weak and snivelly that I'm not invested in any of the major characters. Nevermind the best friend who's
Spoiler (highlight to view)
trying to steal his girl

Having said that - it was so bad it was good. In a tacky way. I'll give it a 6 because at least I managed to finish all of it.

... Last updated on October 19th, 2010, 1:56pm
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So so   
Rating: N/A
by HumptyTortie
January 18th, 2010, 8:25am
Something special about this manga is that it shows both the girl's and guy's perspective on the matter, their feelings, etc.

Erm, I enjoyed it at the start but later it starts to get boring. At the start, Iku was a bit clumsy, slow, and is cute at times. But later, (after Yori leaves) she starts to become a really annoying girl, who cries cries cries. I'm absolutely disgusted by her. Congrats, she had successfully became a typical shoujo manga lead who cannot protect herself, and whining + crying is her forte.

The incest theme isn't very strong, and the smutty areas was alright.

Overall, it was good, and things are getting interesting..
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Rating: 2.0 / 10.0
by Narufan1st
July 24th, 2013, 10:24pm
First chapter wasn't that bad but it all went down hill from there , I try to keep an open mind and stuff but I seriously wanted to backhand that silly Iku girl , I mean she cries so much it's annoying then Yori is a jerk , he acts so mean . I only recommend if you have absolutely nothing better to do with your time , but in the end if seen worse , it's still bad to me though
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Amazing story, I love it!!!!   
Rating: 10.0 / 10.0
by Pyxis7
February 4th, 2013, 3:01pm
On Yori's defense I have only one thing to say:
"The only way to get rid of temptation is to yield to it. Resist it, and your soul grows sick with longing for the things it has forbidden to itself." - Oscar Wilde
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It's repulsive   
Rating: 1.0 / 10.0
by ngocmaii09
June 5th, 2012, 11:04pm
Although I'm not against brother-sister love (I read Flowers of Evil and really enjoyed it), I have to say this story is just disgusting. It's all about sex and nothing else T_T How could such a story received a Shogakukan Manga Award @.@ Can't believe it ++

... Last updated on June 5th, 2012, 11:09pm
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Rating: 8.0 / 10.0
by born2shop
November 30th, 2011, 1:14pm
After reading the description I thought that I would really like this series. But I find it to be really annoying!! Iku really grinds my gears!! She's stupid and so naive. No wonder Yori had to move away to protect her. Left alone, she'd give away their secret and they'd have been discovered a long time ago. SIGH I mean I do think that she's cute sometimes, but over all I just can't get over how stupid she really is.

But anyway, I jut wanted to voice my frustrations of her. Go ahead and give it a read :-D
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Rating: 1.0 / 10.0
by blublaise
September 4th, 2011, 12:30pm
I only found this story because it was one of the recommendations for "Flowers of Evil"...

I did not read it for the art. Not at all. The art is terrible and just plain ugly. It did not fit the plot at all and those chins—*gag*

As for the storyline, I had expected it to be better executed. It's completely unnatural and the pace is just not fitting. The story just jumps into scenarios; it's as if the mangaka thought up of great moments and threw them in without much thought of how it'll turn out. I didn't like it all.

The characters are annoying. They're all so spontaneous that it's unnatural. Also, the twins look nothing alike and their hair and eye color are different from one another. The side characters are cheap. It just added onto to my dislike of the story.

Overall, don't mind if you miss this. I swear, you'd much enjoy "Flowers of Evil" rather than this.
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