

Also known as: NAKAIMO - My Little Sister Is Among Them!
Shougo Mikadono's father has just passed away, and now he must become the head of Mikadono Group, his father's company. After completing the training to take over, there is just one other stipulation he must adhere to: he will need to find a girl he loves at his new school and marry her by the time he graduates high school. Shougo transfers to Miryuin Private Academy, and it seems like he has many girls to choose from, such as Konoe Suruma, the class representative as well as his first new friend; Miyabi Kannagi, a standoffish but kind girl; Rinka Kunitachi, the student council vice president; Mei Sagara, who runs a cafe and dresses like a witch; and Mana Tendou, the student council president. However, there is a complication: one of them is his long-lost half sister, and he has no idea which one, so how can he become romantically involved with any of them?
12
Total episodes
12
Canon episodes
0
Filler episodes
0%
% Filler
Every season
Single Season
Currently, Kono Naka ni Hitori, Imouto ga Iru! has no sequels, prequels, or registered spin-offs. This is the complete story available at the moment.
What to watch, what to skip
You're in luck! Kono Naka ni Hitori, Imouto ga Iru! doesn't have a single filler episode: all 12 episodes are canon. It's a faithful adaptation of the original manga, so you can enjoy it from first to last without skipping anything or checking any list of expendable episodes.
In short, the watch order for Kono Naka ni Hitori, Imouto ga Iru! is as simple as it gets: start at episode 1 and keep going to episode 12 without detours. If you came looking for which Kono Naka ni Hitori, Imouto ga Iru! episodes are filler so you could skip them, the answer is that there aren't any.
Episode by episode
12 Episodes
| # | Episodes | Aired | Type |
|---|---|---|---|
| 1 | The Voice of My Unfamiliar Little Sister— | — | Canon |
| 2 | My Sister and the Moonlit Dance— | — | Canon |
| 3 | My Sister's Seduction— | — | Canon |
| 4 | My Sister's Hero Is Her Onii-sama!— | — | Canon |
| 5 | My Little Sister Won't Let Me Sleep— | — | Canon |
| 6 | My Neko-mimi Maid Sisters— | — | Canon |
| 7 | My Little Sister Is Disciplined and Beautiful!— | — | Canon |
| 8 | My Sister Resisted— | — | Canon |
| 9 | Surprise Attack! Little Sister Warning!— | — | Canon |
| 10 | My Blooming Sisters— | — | Canon |
| 11 | My Sister's Trap— | — | Canon |
| 12 | My Sister Was Always Beside Me— | — | Canon |
Verified legal platforms
We don't have confirmed streaming platforms for this anime yet.
Liked it? Keep going
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Common questions
Kono Naka ni Hitori, Imouto ga Iru! has a total of 1 season. The series is completed. Each season is divided into multiple episodes with stories that advance the main plot of the anime.
In total, Kono Naka ni Hitori, Imouto ga Iru! has 12 episodes in its only season. You can consult the complete episodes table to see the breakdown by season.
It is recommended to watch Kono Naka ni Hitori, Imouto ga Iru! in chronological broadcast order. This means starting from season 1 and continuing sequentially to the last season. Check our watch order guide which includes information about filler vs canon episodes for an optimal experience.
Kono Naka ni Hitori, Imouto ga Iru! is available on various legal streaming platforms. Check the platforms section at the top of this page to see where it's currently available. Options may vary depending on your geographic region.
Yes, Kono Naka ni Hitori, Imouto ga Iru! is a completed anime. All seasons have already aired and you can enjoy the series in its entirety without waiting for new episodes.
No, Kono Naka ni Hitori, Imouto ga Iru! does not have filler episodes. All its episodes are canon and faithfully follow the original manga story, so you can watch all episodes without worrying about skipping anything.
You can check the score, reviews, characters and statistics for Kono Naka ni Hitori, Imouto ga Iru! directly on MyAnimeList, the world's largest anime database. There you'll find the community rating, global ranking and opinions from other fans.