NAKAIMO - My Little Sister Is Among Them! is a tV series anime that premiered in summer 2012, produced by Studio Gokumi.

About the production: the story comes from a light novel, there are 12 episodes of about 24 minutes and its current status is "finished".

Its main genres are comedy, ecchi and romance, with themes such as Female Harem, Nudity, Heterosexual and Maids.

On AniList, NAKAIMO - My Little Sister Is Among Them! has an average score of 60%, an average score, and appears on 45,918 users' lists.

The franchise continues in or follows from: 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)

Official synopsis from AniList.