Boku wa Imouto ni Koi wo Suru

By bluemist on June 1st, 2005

Boku wa Imouto ni Koi wo Suru


Koi Kaze not enough? Enjoy the dangerous world of incest with Boku wa Imouto ni Koi wo Suru.

Boku wa Imouto ni Koi wo Suru is a one-shot OVA based on a shoujo manga of the same title. It tells the story of a taboo incestual relationship of brother Yori and sister Iku. Yori is the first to break down. He starts to keep secrets and ignore Iku, and yet sometimes he’s being too overprotective of her, even fighting someone in class who made her embarrased. Iku wonders why she’s being mistreated lately. One night, Yori confesses to Iku, and of course rejection is abound, because it is indeed weird. Yori even realizes it himself, that this is wrong, but he can’t stop his feelings towards his sister. He does a lot of things to make himself go the right path somehow, by planning to go to a faraway college to stay away from Iku, and even trying to have a normal relationship with another girlfriend. By this time, Iku herself is starting to waver her own feelings. She starts to become jealous of Yori and his girlfriend, and so she also developed feelings towards her brother.

Treading into dangerous territory eh? These are the kinds of stories that are very interesting to me because a person like me could barely understand the emotional pains of having this feeling. This is the kind of storytelling that makes the onii-chan complex seem light-hearted. Deep inside, the pain of an impossible relationship exists within the lovers involved. Yup, Yori and Iku, despite their extreme intimacy, continually remind themselves that this is wrong. Towards the end, they still try to find ways to move on and forget their impossible love somehow (through separation), and yet we still see a tease, because somehow it’s very hard to let go.

There are scenes of intimacy in this anime, but nothing too graphic. The animation and color tone reminds me of Marimite, the atmosphere similar to fellow incest-themed anime Koi Kaze. This is well-animated and well-paced, staying true to many scenes in early volumes of the manga. Of course, other events are omitted. In the manga Yori and Iku are extremely intimate, they express it almost anywhere. I wonder when they’ll be caught…

Anyway, I recommend you watch this with an open mind. In the real world people may be guilty of this, but while society abhors this, do not be discriminative. Love is really more complicated than we think.

Update: It’s going to be a live-action movie! Boku wa Imouto Ni Koi Wo Suru the movie will be starred by Jun Matsumoto (of Gokusen/Hana Yori Dango fame) and one hawt babe Nana Eikura, a magazine model. Nice, I hope to catch it soon.


Posted By: kye On: June 08, 2005 At: 4:25 pm

hey! i first learned about this OAV because morikubo shoutarou is voicing yori and wanted to watch it ever since…..espacially when i came across the drama cd from ‘boku wa…’ (which i’m listening to all over again^^)…but i don’t know how to get this OAV……i’m sure that it won’t be shown in my counrty not now, not ever:( would you mind telling me where you found it? please~

Posted By: Silent On: July 08, 2005 At: 1:35 am

After, I’ve watched Koi Kaze and I found out about Boku wa Imouto ni Koi wo Suru (I’m In Love With Little Sister) when and where did you find this DVD? I wanna know where I could get this DVD! PLEASE!

Posted By: me On: August 06, 2005 At: 9:27 am

I agree with you this is a very good anime. Too whoever asked it’s not out on DVD but it is on bittorrent.

Posted By: takz On: October 23, 2005 At: 12:23 pm

i have watched this anime a month ago… it is pretty touching… but for a normal teenager like me, they might think it is some kind of hentai… it’s theme is so dramatic… can’t help myself but cry… btw, this can be found on MANHOLE.irc they subbed the anime..

Posted By: Jacen On: May 07, 2006 At: 1:29 pm

Just saw this and I was just blown away by the way it made me feel. I dont care if the story was incest like, but it was dramatic and it makes your heart pouring out for the characters. I kinda feel bad for Iku’s best friend, though, poor her. But this is a good anime.

Posted By: PiXiE13 On: May 17, 2006 At: 11:43 pm

u know wat??i can relate to the story…well…actually,it’s not really like that….the only difference is that,i’m inlove with my cousin(1st cousin)…which is also a forbidden love…umm…i’m also having it hard coz’my parents and aunties discovered about our relationship…and i don’t know what to do…they’re watching very clearly on us…i hope it ends…

Posted By: obentou On: June 15, 2006 At: 10:03 pm

have you heard? this will have a live-action movie…with Matsumoto Jun as the lead character.

Posted By: someone On: October 08, 2006 At: 3:13 pm

I was so shocked when I saw that Matsumoto Jun was going to be lead character. Seriously, I never imagined him playing any of the intimate scenes. However, I think that they’re probably just going to show a teensy bit of skin, and the rest will probably be blacked out, with sound. From his past credits, I don’t think Matsumoto Jun approves of being completely naked on screen.

Posted By: g-cel On: October 31, 2006 At: 7:29 am

incest OHHHH!!!!!!!!!

Posted By: Becca On: January 17, 2007 At: 3:14 pm

Put a happy ending to it

Posted By: GImmi more On: January 26, 2007 At: 8:29 am

Man this movie is a wonderfull masterpiece i must say !! i really love it !1

Posted By: shmily On: February 20, 2007 At: 10:45 am

it is very good manga and anime, but i don’t know the ends of them
please tell me THEY AREN’T BROTHER, is it right

Posted By: shoval^^ On: February 25, 2007 At: 1:47 am

can you put in here the ending song?


Posted By: mika On: March 05, 2007 At: 7:34 am

when are they going to release the movie and whats a manhole

Posted By: Inaiye On: April 16, 2007 At: 4:55 am

I just wonder how to get to see the film Boku wa Imōto ni Koi o Suru (sigh)…

Posted By: yauri-chan On: April 28, 2007 At: 4:56 pm

uuh..where can we get the manga of this animei series?

Posted By: redstar_08 On: May 07, 2007 At: 1:10 am

i fell inlove with this’s so touching.. but why is it too short??

Posted By: ihateit On: May 26, 2007 At: 3:30 pm

i hate it i really hate it!bullshit!

Posted By: Answer On: June 20, 2007 At: 1:34 pm

It’s not forbidden to love you’re siblings but it is if it is in a forbidden way. Any who it is said by doctors 25% of children are invloled in some sort of close gentic sexual relation from the ages of childhood through teenage years only 5% have been sexually involed in this case it might be forbidden here but it happens everyday and we decide to ignore it. In my belif it is the parents who are to be blammed because they hadn’t parented well. I love this anime though somewhat disterbing I find it beatifully made. Who said it’s forbidden to wed your 1st cousin. Mt parents are first cousins and I turned out perfectly fine.

Posted By: iynn512 On: July 22, 2007 At: 1:19 am

i just watch this ova a few minutes ago. it felt so weird… i have a brother myself, but again, watching this anime feels weird…plus i’m not satisfy with the ending…it just felt really2 weird

Posted By: just asking On: August 22, 2007 At: 9:06 am

i have a copy of the said anime… i wanted to have a copy of the movie version… where can i can it? thanX

Posted By: Hitomi Ito On: August 30, 2007 At: 9:37 am

Boku wa Imouto ni Koi wo Suru—where can i find the vidoe of this? the full one?? how many parts are their in this manga? please give me a reply to

Posted By: i need it On: September 01, 2007 At: 6:40 am

Boku wa Imouto ni Koi wo Suru—where can i find the vidoe of this?
Please give me a reply to

Posted By: kyaa~` sub it! On: September 08, 2007 At: 7:18 am

the live action movie is uploaded on veoh, with jun matsumoto. for anyone who thinks that jun wont do intimate scenes or whatever….you obviously haven’t seen tokyo tower yet. there was a part where jun was completely naked in the bath or hot tub. it is uploaded…but there are no subs yet. someone out there please post it with english subs, i know that everyone who wishes to see the movie will greatly appreciate. thank you so much. ps: i saw the anime, it was great, romantic, and very touching.

Posted By: joeahyohX33 On: November 04, 2007 At: 12:25 pm

is it a happy ending?

Posted By: soooo On: November 09, 2007 At: 3:01 pm

just soooo wrong wrong wrong and did i mention it’s wrong

Posted By: kim On: November 19, 2007 At: 10:09 am

its so nice and lovely

Posted By: Jane On: November 20, 2007 At: 7:24 am

i really love this anime but i don’t know where to download it =(

Posted By: Sydney On: December 06, 2007 At: 10:22 am

I remember the first time I saw this. The incest was a little different, but if anyone knows what love is at all, it’s not really a choice whether or not you love someone. It just sort of… happens. The incest just happened. This story is very beautiful and it has a great concept. The ending was however, tremendously dissatisfying. I’m very VERY disappointed that they didn’t make some sort of part 2. But I guess they wanted us to use our imaginations. 😛 I’m currently writing a book, called to Boku wa Imouto wo Koi wo Suru Part 2. I don’t want to publish it or anything, but I’m typing it up on, just to satisfy my feelings towards this story. If anyone’s interested in seeing it, just search for it on

Posted By: deya591 On: December 08, 2007 At: 11:28 am

HEY ….i’m starting to watch da movie now o veoh…but can some 1 tell me if its true (if any1 has read the manga)….dat they are not related…plz help me here…i’m confused and surprised….I lUV Matsumoto Jun ^_^…lol..

Posted By: leslie On: January 30, 2009 At: 4:49 pm

the boku wa imouto was so beautiful and in love to one onother

Posted By: Sirenetta On: May 26, 2012 At: 4:58 pm

Hello!!! I’ve watched the live action movie first, then I watched the anime. I want to know if the couple ended up together in the live action movie, ’cause the ending was very confusing to me. They walk to their home holding each others’ hands and yet Yori tells Iku that “It’s over” and I don’t know if he meant that the game they were playing was over, their relationship as Lovers or both ????
Thank you before hand for any reply 🙂