My Imouto: Koakuma na A-Cup

What would you like to edit?

Alternative Titles

Synonyms: My Sister: Little-Devil with an A-Cup
Japanese: My妹~小悪魔なAカップ~


Type: OVA
Episodes: 2
Status: Finished Airing
Aired: Jul 6, 2012 to Sep 28, 2012
Producers: Mary Jane, Studio 1st
Licensors: None found, add some
Studios: Lilix
Source: Light novel
Genre: HentaiHentai
Duration: 15 min. per ep.
Rating: Rx - Hentai


Score: 6.611 (scored by 51615,161 users)
1 indicates a weighted score.
Ranked: N/A2
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #5871
Members: 12,214
Favorites: 41

Available At


Ranked N/APopularity #5871Members 12,214
Add to My List
Episodes: /2


Once again, the peaceful morning is shattered by a diatribe delivered by a sister to her brother. This is a daily occurrence at the Utsumi household, and the fact that his relationship with his step-sister, Miyu, isn't improving is a cause of anguish for Mitsuru. While she may behave like an angel in the presence of their parents, when they are alone, she's a pure devil.

One day, Mitsuru discovers that Miyu has a complex regarding her bust-size. He unwisely brings it up and she blows up at him. While attempting to restrain the raging Miyu, the two lose their balance and fall. Staring into Miyu's face up close, Mitsuru finds himself drawn by her cute features, the warmth of her body, the peculiar scent of a young girl...

(Source: translated and adapted from official site by Cranston)


No background information has been added to this title. Help improve our database by adding background information here.

Related Anime

Characters & Voice Actors


Original Character Design
Aoyagi, Ryuuhei
Key Animation


Opening Theme

Apple Music
Amazon Music
Youtube Music
No opening themes have been added to this title. Help improve our database by adding an opening theme here.

Ending Theme

No ending themes have been added to this title. Help improve our database by adding an ending theme here.


Aug 3, 2013
My Imouto Koakuma no A Cup is a vanilla incest hentai about a boy and his younger step-sister. The pictures on MAL (to me anyway) make the girl, Miyu, look a lot younger than she really is as she's only a year or so younger than her step-brother and both of them are in high school.

In the beginning, both Miyu and her brother, Mitsuru, fight a lot and don't get along at all. Both of them have feelings for each other that they are keeping hidden. Miyu is also afraid that her brother won't like her because her breasts are small. This leads to her ...
Mar 2, 2013
This hentai, unlike the others, had a great story development. First, she displays a tsuntsun personality, then after feeling something for her brother, she becomes Deredere. Her character is indeed cute and very innocent, and I too would want that. It was enjoyable and erotic how she is pleasured by her first time with sex. I find this very enjoyable 100/10.
Mar 27, 2014
Mixed Feelings
This would have been better without the sex scenes.

It suffered from the typical problem of escalating too fast, would have been far better if the relationship had been teased out more slowly.

I also had issues with how the nipples were drawn.


Recent News

Recent Forum Discussion

Poll: My Imouto: Koakuma na A Cup Episode 2 Discussion
notsureifsrs - Oct 2, 2012
15 repliesby Chika_tetsu »»
Oct 29, 2022 5:45 AM
Poll: My Imouto: Koakuma na A Cup Episode 1 Discussion
Hmmmmmmmmmmm - Jul 8, 2012
13 repliesby Juanmamola76 »»
Mar 19, 2017 10:15 AM