Kono Naka ni Hitori, Imouto ga Iru! (NAKAIMO - My Little Sister Is Among Them!) é um anime no formato série de TV que estreou em verão (julho) de 2012, produzido pelo estúdio Studio Gokumi.

Sobre a produção: a história vem de um light novel, são 12 episódios de cerca de 24 minutos e o status atual é "finalizado".

Os gêneros principais são comédia, ecchi e romance, com temas como Female Harem, Nudity, Heterosexual e Maids.

No AniList, Kono Naka ni Hitori, Imouto ga Iru! tem nota média de 60%, uma nota mediana, e está na lista de 45.918 usuários.

A franquia tem continuação ou história anterior: Kono Naka ni Hitori, Imouto ga Iru!: Ani, Imouto, Koibito.

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? (Source: Sentai Filmworks)

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