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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 (477d ago)
v.10 c.57 by JShoujo Scans (492d ago)
v.10 c.54-56 by JShoujo Scans (533d 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
Click here to view the forum

User Rating
Average: 6.9 / 10.0 (390 votes)
Bayesian Average: 6.9 / 10.0
 22% (84 votes)
 11% (44 votes)
 17% (65 votes)
 15% (57 votes)
 10% (40 votes)
 6% (25 votes)
 3% (11 votes)
 3% (13 votes)
 2% (8 votes)
 11% (43 votes)

Last Updated
August 10th 2015, 4:02pm PST



Category Recommendations





Original Publisher

Serialized In (magazine)
Sho-Comi (Shogakukan)

Licensed (in English)

English Publisher

Activity Stats (vs. other series)
Weekly Pos #697 increased(+193)
Monthly Pos #1129 increased(+10)
3 Month Pos #1217 increased(+100)
6 Month Pos #1301 decreased(-100)

List Stats
On 1143 reading lists
On 637 wish lists
On 441 completed lists
On 197 unfinished lists
On 289 custom lists

Note: You must be logged in to update information on this page.

Forum Posts
How is this a spin-off? 943 days, 0 hours, 8 minutes ago
Spoilers Please! 1040 days, 21 hours, 12 minutes ago

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User Comments [ Order by usefulness ]

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Love this   
Rating: 9.0 / 10.0
by AkariHimeDono
October 5th, 2015, 11:38pm
I love the plot and all, but Iku's mentality is a little annoying for me. Still, I can feel that their suffering is genuine since they know it's taboo but can't help sinking. To anyone who says that incest is gross thus not liking/reading this manga, because there's the incest element that the characters and the plot progress they way they did. If not, this would just be another typical whatsoever shoujo manga like any other.
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Rating: 6.5 / 10.0
by ohsnaptheresa
November 26th, 2014, 3:25pm
I felt the ending was anti-climatic. The build-up towards what I was expecting to be the ending left me sort of bitter about it. We don't find out anything about their future, which made me annoyed. I hope there is some sort of oneshot epilogue that might come out, otherwise you'd be left severely disappointed.
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Insest is always gross..   
Rating: 6.0 / 10.0
by tipz
November 26th, 2014, 8:28am
... But the story comes with a pretty good storyline.. I wish it didn't focus on sex so much as it should have focused more on their relationship buildup. Art was not as good as it was in Boku no Hatsukoi o Kimi ni Sasagu, but that is probably because the artistry was at its beginning stages. They make Takuma look way different in the other series.
Spoiler (mouse over to view)
it starts from the get go with a twin brother confessing himself to his sister, and almost forcing on her his erection. She takes it very fast for some reason.. They go through school with a secret relationship all the while he has another gf. She soon finds out their feelings and he breaks up with her.. As well he tells his bf that his feelings for her. As the middle school time is ending for them his sister ends up throwing herself at him to have sex with her because of her jealousy that the has already had sex with someone else.. He then moves to a boarding school where he thinks he is getting away from her. That is not the case he ends up sneaking out and getting in trouble to see her. All the whole his best friend is trying to be with her with no effect.. He also gets threatens by his ex.. She tries to get his sister raped when she sneaks into his dorms... He ends up getting into a fight then expelled... When he goes back home their mom already has catches on that they are in relation to each other but he also catches on that they may not be related.. The truth of the matter is that they are still twins but born by different fathers. Finding this out he leaves home and everyone behind.. She is determined to find him again though, and 10 years later she does.. She rushes to him and that is the end of it.
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I don't recommend it   
Rating: 4.0 / 10.0
by Verito.S
October 8th, 2014, 12:04am
I started reading this series when shoujo magic was still up, like a million years ago.
Probably a lot of people started this series back then, so obviously we were different people (and manga was different) 10 years ago.
Funny enough, the spin off is really good.
So... read the spin off, don't read this manga.

... Last updated on October 8th, 2014, 12:04am
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damn its so intense   
Rating: 10.0 / 10.0
by E.M.A
January 24th, 2014, 9:20pm
the OVA brought me here biggrin , well the truth is I don't like incest type, but I'm curious about the ending, and then I peak a little the latest chapter (49 so far). and then,
Spoiler (mouse over to view)
I found out that Yori want to find the truth that iku is not his sister, but iku is adopted by his parents.. and now I'm reading this smut things and thinking they are not blood related :D

yeah,,, I like it LOL

... Last updated on January 24th, 2014, 9:22pm
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Rating: 1.0 / 10.0
by HummingBird0o
October 12th, 2013, 7:52am
i don't know how ppl could even go reading to bind chapter 6 :l its too disgusting >< they do it on the train , in the church too ? !! there should be a limit to how fucking horny you are *-* its too stupid to read and waste of time >_<
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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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Mature doesn't mean sex and sex and sex...   
Rating: 1.0 / 10.0
by jackalan
January 31st, 2013, 1:11am
Okay, I give in for the smut readers. But this manga has nothing in it. Everything is poor in development. And every chapter only deals with sex (dude, if he gives you oral sex, it IS still sex! It counts!) The world of this manga is just boring and shallow to the max.

By the description, the author praises shits out of the male lead's intelligence. But if he is THAT intelligence he will have thought better and stayed away from his lust, temptation and everything else in between with his sister. Oh well, worst case scenario, kill himself before making the dim-witted and absurdly naive sister falls in love with him (like in two freaking volumes).

If you like to read something with REAL INTELLIGENCE, this is NOT for you.

... Last updated on January 31st, 2013, 7:00am
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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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