Nakaimo: My Little Sister Is Among Them! (2012)
A wildly awkward romantic comedy anime where one heir, one inheritance, and one hidden sister make for the most complicated school life imaginable.
Nakaimo: My Little Sister Is Among Them! - Series Information
- Original Title: この中に１人、妹がいる！
- First Air Year: 2012
- Last Air Year: 2012
- Type: TV Series
- Genres: Drama, Animation, Comedy
- Content Rating (US): TV-MA
- Episode Runtime: Average runtime per episode (25 minutes)
- Number of Seasons: 1
- Number of Episodes: 12
- Status: Ended
- Original Language: Japanese
- Spoken Languages: Japanese
- First Air Date: July 6, 2012 (United States - TV-MA), July 6, 2012 (Australia - MA 15+)
- Networks: TBS, MBS, CBC, BS-TBS
- Alternative Titles: Kono Naka ni Hitori, Imouto ga Iru! (UA), NakaImo (JP), 三人行必有我妹 (CN), One of Them Is My Younger Sister! (CH)
- Production Companies: Studio Gokumi
- Production Countries: Japan
Nakaimo: My Little Sister Is Among Them! - Plot
Is insanity hereditary? Shougo Mikadono's beginning to think so, because the terms of his late father's will seem crazy and following them may drive Shougo bonkers as well. Oh, it sounds simple at first: before Shougo can claim his VERY large inheritance, he just has to start attending a certain new school and find a nice girl to marry. It's a little unromantic, but perfectly do-able, right? After all, all the girls seem quite friendly, so all Shougo has to do is find one he has something in common with. Except, and here's the kicker, it turns out that Shougo has WAY too much in common with one of them, because she's actually his long-lost sister! And he has no idea which one she is! Will Shougo meet and court his Miss Right without committing something very morally wrong? Can he find his future bride without slipping into the wrong set of genes? And if his little sister does reveal herself, just how much will be revealed and under what circumstances?
Nakaimo: My Little Sister Is Among Them! - Trailer
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Nakaimo: My Little Sister Is Among Them! - Cast & Crew
Main Cast
- Arisa Noto
- Rikiya Koyama
- Aya Hisakawa
- Takahiro Sakurai
- Rina Hidaka
- Kaori Ishihara
- Asuka Ohgame
- Ayako Kawasumi
- Ayana Taketatsu
- Yui Ogura
Nakaimo: My Little Sister Is Among Them! - FAQs
What is Nakaimo: My Little Sister Is Among Them! about?
The series follows Shougo Mikadono, a wealthy heir who must enroll at a new school and find a girl to marry before claiming his inheritance — with one enormous catch: one of the girls around him is secretly his long-lost sister, and he has no idea which one.
Is Nakaimo based on a light novel or manga?
The anime is adapted from a light novel series written by Hajime Taguchi and illustrated by Gekka Uruu. The original novels were published under the MF Bunko J label, and a manga adaptation also ran alongside the light novel release.
Who voices the main character Shougo Mikadono?
Shougo Mikadono is voiced by Takahiro Sakurai, a prolific voice actor widely known for roles in numerous anime series. The supporting cast includes Ayana Taketatsu, Rina Hidaka, Kaori Ishihara, Ayako Kawasumi, and Yui Ogura, among others.
Does the anime reveal who Shougo's sister actually is?
The identity of Shougo's secret sister is the central mystery driving the entire series. The anime does provide a resolution by the final episode, though viewer reactions to the reveal have been mixed — some found it satisfying, others felt it raised more questions than it answered.
When did Nakaimo: My Little Sister Is Among Them! first air?
The series premiered on July 6, 2012, airing in Japan across multiple networks including TBS, MBS, CBC, and BS-TBS. It ran for 12 episodes, concluding its broadcast run in the same year.
Where can you watch Nakaimo: My Little Sister Is Among Them!?
The series is available to purchase on Amazon Video. Streaming availability may vary by region, so checking JustWatch is recommended for the most up-to-date viewing options in your area.
What is the content rating for Nakaimo?
The series carries a TV-MA rating in the United States, indicating it is intended for mature audiences. It contains ecchi elements, suggestive humor, and themes involving forbidden romantic tension, making it unsuitable for younger viewers.
What anime series are similar to Nakaimo?
Fans of Nakaimo may enjoy Days with My Stepsister, The Dangers in My Heart, Alya Sometimes Hides Her Feelings in Russian, and A Condition Called Love — all of which blend romance, comedy, and emotionally complicated relationships in a school setting.
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