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Series

Nakaimo: My Little Sister Is Among Them!

201225m6.4 / 101 seasons

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?

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Available in US

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Season guide

Season 1

Play Season

12 episodes available

Episode 1: The Voice of My Unfamiliar Little Sister

25m

During his father’s funeral, Shogo hears a voice outside his window claiming to be his little sister, before he has a chance to learn more, he is told the conditions of his inheritance.

Episode 2: My Sister and the Moonlit Dance

25m

After the mysterious phone call the person claiming to be his sister, Shogo school life gets more hectic with the arrival of a new transfer student.

Episode 3: My Sister's Seduction

25m

The question of Shogo's sexual preference is causing Miyabi and Rinka to go overboard on showing the appeals of a woman.

On screen

Cast & Characters

Arisa Noto

Maiko Kotori (voice)

Rikiya Koyama

Kumagoro Mikadono (voice)

Aya Hisakawa

Kanoko Mikadono (voice)

Takahiro Sakurai

Mikadono Shogo (voice)

Rina Hidaka

Mei Sagara (voice)

Kaori Ishihara

Konoe Tsuruma (voice)

Asuka Ohgame

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Episode 4: My Sister's Hero Is Her Onii-sama!

25m

Shogo has ruined his relationship with Miyabi; after letting Konoe know about his secret, a new problem has arisen.

Episode 5: My Little Sister Won't Let Me Sleep

25m

He thought it was over but his little sister keeps calling. Shogo discovers someone else has the same prototype phone as Konoe.

Episode 6: My Neko-mimi Maid Sisters

25m

Lyrical Sisters is on the verge of shutting down, Shogo puts together and executes a plan worthy of the Mikadono name.

Episode 7: My Little Sister Is Disciplined and Beautiful!

25m

Using the school broadcast system, Shogo’s “sister”, has requested he stops looking for her or she will reveal damaging secrets.

Episode 8: My Sister Resisted

25m

Kunitachi might be the Shogo’s sister but he can’t get close to her. Ikusu suggest that Shogo and Kunitachi spend time outside the school to have her drop her guard.

Episode 9: Surprise Attack! Little Sister Warning!

25m

Shogo is getting a new neighbor and an unexpected surprise.

Episode 10: My Blooming Sisters

25m

When all of Shogo’s potential wives are invited to the same party, things do not go as planned. Especially when he finds a trusted member is planning to overthrow his inheritance of the company

Episode 11: My Sister's Trap

25m

With all the lies, conflicting stories, and people trying to ruin his inheritance, Shogo is breaking down. To add to his worries, Kannagi is making outrageous demands.

Episode 12: My Sister Was Always Beside Me

25m

With the help of Ikusu, Shogo has finally put the clues together on who his real sister is.

Mana Tendou (voice)

Ayako Kawasumi

Risa Seri (voice)

Ayana Taketatsu

Rinka Kunitachi (voice)

Yui Ogura

Yuzurina Houshou (voice)

Ami Koshimizu

Ikusu Mizutani (voice)

Ayane Sakura

Miyabi Kannagi (voice)