Kono Naka ni Hitori, Imouto ga Iru!: Ani, Imouto, Koibito

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Alternative Titles

Synonyms: Kono Naka ni Hitori, Imouto ga Iru! OVA, Kono Naka ni Hitori, Imouto ga Iru! Episode 13, NakaImo, One of Them is My Younger Sister! OVA, Who is Imouto? OVA, NAKAIMO - My Little Sister Is Among Them! OVA
Japanese: この中に1人、妹がいる!兄、妹、恋人


Type: OVA
Episodes: 1
Status: Finished Airing
Aired: Mar 27, 2013
Producers: Lantis, TBS, DAX Production
Licensors: Sentai Filmworks
Studios: Studio Gokumi
Source: Light novel
Genres: ComedyComedy, RomanceRomance, EcchiEcchi
Themes: HaremHarem, SchoolSchool
Duration: 23 min.
Rating: PG-13 - Teens 13 or older


Score: 6.701 (scored by 2369223,692 users)
1 indicates a weighted score.
Ranked: #55212
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #3112
Members: 45,649
Favorites: 18

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Unaired 13th episode of the TV series.


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Related Anime

Characters & Voice Actors


Nawa, Munenori
Iwanami, Yoshikazu
Sound Director
Theme Song Performance
Itou, Masumi


Opening Theme

Apple Music
Amazon Music
Youtube Music
"Choose me♡Darling (Choose me♡ダーリン)" by StylipS

Ending Theme

"Heavenly Lover" by Konoe Tsuruma (cv. Kaori Ishihara), Miyabi Kannagi (cv. Ayane Sakura), Rinka Kunitachi (cv. Ayana Taketatsu), Mana Tendou (cv. Asuka Ogame), Mei Sagara (cv. Rina Hidaka)


Dec 24, 2019
I watched this despite how I feel about the main anime. I was pleasantly surprised. It works a hell of a lot better than the main anime. If you can put the rest of the series out of your head, it's very watchable. Nothing great just light fluff, about a little sister vetting her big brothers girlfriends in a very bratty kind of way but fun.

The story makes much more sense than the mainl. The characters are there and mostly stand on their own except for the cross dressing ninja from the main series. You got the feeling she was put in there ...
Jan 24, 2021
Mixed Feelings
Kono Naka ni Hitori, Imouto ga Iru!: Ani, Imouto, Koibito (2013)

Not quite the 13th episode I had expected. I had hoped for some proper closure to the storyline instead we had a date episode. The episode in itself was one of the better ones of the show as a whole but at the same time, it felt lacking in many respects.

I still do not understand how no one can see Ikusu Mizutani is a girl when the character profile is so beyond blatant.

The art is the same of which has aged fairly Okay but also seems a bit badly lit considering the storyline ...
Apr 25, 2021
Zzzzzz, It doesn't really make any sense, the series lost serious continuity after more or less half, the ending was half acceptable, but this episode is lousy. besides being unnecessary, it is very, really listen to me, VERY boring and tedious to watch.
It may be fiction and whatever you want, but it is very annoying. In my opinion that her sister is regulating everything, it makes no sense to have that extra episode.
Some futures stories are boring as hell and others hopefully lasted 20 seconds, nothing regulated, Definitely not the end I expected

it won't let me do a long review, so
I leave you a recipe ...

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Recent Forum Discussion

Poll: Kono Naka ni Hitori, Imouto ga Iru!: Ani, Imouto, Koibito Episode 1 Discussion ( 1 2 )
Stark700 - Mar 29, 2013
65 repliesby yveltalkyogre »»
Dec 30, 2022 7:42 AM
Poll: New preview pics! Sexual Inuendos now more hardcore Discuss!
Yumekichi11 - Dec 7, 2012
6 repliesby Mystogan14579 »»
Feb 10, 2022 3:58 PM
Poll: Thoughts?
Yumekichi11 - Sep 20, 2012
5 repliesby Sedaka »»
Nov 13, 2012 10:48 AM
It’s time to ditch the text file.
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