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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 (279d ago)
v.10 c.57 by JShoujo Scans (293d ago)
v.10 c.54-56 by JShoujo Scans (335d 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 (378 votes)
Bayesian Average: 6.81 / 10.0
 21% (81 votes)
 11% (41 votes)
 17% (64 votes)
 15% (55 votes)
 10% (39 votes)
 6% (23 votes)
 3% (11 votes)
 3% (12 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 #675 increased(+51)
Monthly Pos #996 increased(+51)
3 Month Pos #1035 decreased(-82)
6 Month Pos #991 (No change)

List Stats
On 1161 reading lists
On 636 wish lists
On 384 completed lists
On 190 unfinished lists
On 276 custom lists

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Forum Posts
How is this a spin-off? 744 days, 12 hours, 48 minutes ago
Spoilers Please! 842 days, 9 hours, 52 minutes ago

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User Comments [ Order by usefulness ]

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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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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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not worth it   
Rating: 2.0 / 10.0
by keristars
April 5th, 2010, 8:34pm
The story is pretty cliche and hits all the stops for overdramatic shoujo romance, with the main "feature" being an incest theme to set it apart. But what really bothered me was that there was a lot of really dark sorts of things going on related to the incest without mention. I don't mind (you could even say "like") incest themed stories when the incest is actually addressed and not brushed away or treated as any other normal relationship. In <i>Boku wa Imouto...</i>, it's hardly addressed at all, except to provide more drama of "oh noes we can't be together sad". It's frustrating to read and hard to enjoy. The sister manga to this one, while equally melodramatic, worked much better.

It doesn't help that the main girl has hardly any personality and absolutely no backbone or ability to stand up for her own interests. I don't like either of the main characters in the least.

Also, and this is even more subjective on my part, the art style is pretty awful. The main guy Yori is downright scary in appearance, particularly because of the strange way the eyes are drawn. I could never quite get used to the style.

I stopped reading after the fourth volume, because I didn't care anymore what happened.

... Last updated on April 5th, 2010, 8:36pm
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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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fabolous manga   
Rating: 9.0 / 10.0
by Midori_chin
October 29th, 2008, 3:35am
Of my manga preferred, after uwasa no midori-kun! and zetsuai/bronze, goes east manga, ENCHANTS to ME, is brilliant, too much smut at the outset (the 3 first volumes) later practically does not have, great drawing, great form to explain the feelings in each page, Iku is charming, went away an uncle or lesbian it would enamor with her xD to me and Yori is super sexy, we have loving trio with Yano, the life and miracles of the mother of Iku and Yori….in aim I recommend, it, although but it is worth to you not to hate incest, because if not….you would pass bad xD
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deliberately provocative   
Rating: N/A
by littleyellowdress
September 26th, 2008, 1:36pm
In Boku Imouto, it feels like the incest theme was just mixed into a typical shoujo story to deliberately produce the 'shock' effect. Going for a head-on approach to this taboo subject instead of a careful one, the mangaka milks this 'forbidden love' appeal for all its worth and ties it in with her usual teenage angst shtick.

I agree with fictionalscience, the excessive melodrama and paper-thin characterisation make it hard to truly sympathise with the characters. When it comes down to it, this is just shoujo fluff (with added angst!), and what I find especially lacking in Boku Imouto is the realism and quiet, subtle feeling seen in Koi Kaze. I guess it's unfair to compare two incest mangas of different genres, but I prefer Koi Kaze so much more.

... Last updated on September 26th, 2008, 2:32pm
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what about that?!   
Rating: 10.0 / 10.0
by mija mau
August 29th, 2008, 7:25pm
gaaaaaaahhhh >.< i lovelovelove this manga, and the ova, too...
well, about the incest theme and stuff... *g* i think, that they aren't really twins, not even siblings, because in vol 3 chpt 18 the father looks at their pic (after ohters have watched it and said, that it is kinda strange, that the two of them so much don't look alike) that even "their birthday's not at the same date" x3 huuuuuhhhhhhhh i'm so excited how the story will go on......

... Last updated on August 29th, 2008, 7:26pm
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Rating: N/A
by fictionalscience
June 23rd, 2008, 7:13am
I don't like it, not because it's incest, but because the plot is predictable and over-dramatic, and the characters are not likable (as another comment says, the guy's quite a jerk, can't sympathize with his pain). Typical immature shoujo manga, just with incest.
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Rating: 10.0 / 10.0
by blueseeker
May 26th, 2008, 5:14pm
Gosh am so glad that was over with, truly a good manga but the angst and drama is all the way to the last chapter....really it took a toll on me. I'm quite familiar with sensei's work and have no issues with the smuttiness or incest for that matter afterall is not in my family so i do not really think abou it...hehe. Glad it did not end in tragedy, i would have been horrified. After all the mangas i have read so far from sensei i think is the best because even with the drama it kept me there reading even when i could hardly take it.
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Rating: N/A
by juls91
April 3rd, 2008, 9:28am
i'm not going to read it.. but i saw the anime... And it was cute!!! this guy love his sister sooo much and in a cute way and the end is super cute... Obviating the fact that they are siblings..... it's not that i like this kind of mangas.. and it's actually it's like whatever,.... but i dind't hated it...

... Last updated on April 3rd, 2008, 9:30am
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