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Kono Naka ni Hitori, Imouto ga Iru!
Aliases

Kono Naka ni Hitori, Imouto ga Iru!, NAKAIMO - My Little Sister Is Among Them!, この中に1人, 妹がいる!, Nakaimo: My Little Sister Is Among Them!, この中に1人、妹がいる!, Default, Synonym, NakaImo, One of Them is My Younger Sister!, Who is Imouto?, Japanese, この中に1人、妹がいる!, English

S123SUMMER 2012TV
concluded
Announced
In production
Releasing
Completed

NAKAIMO - My Little Sister Is Among Them!

Kono Naka ni Hitori, Imouto ga Iru!

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)

Last updated

Jun 3, 2026, 11:25 PM

Franchise overview

Franchise timeline

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Renewal pulse

Courcast score breakdown

CourScore is the probability of an official sequel announcement within 18 months, blending attention velocity, completion strength, and catalogue health.

CourScore

47.3

CourScore is the probability of an official sequel announcement within 18 months.

Signal coverage: 100% Signal freshness: High Updated 2 hours ago

Top reasons

  • Cross-platform popularity index - Aggregate reach of ~23,761 followers
  • Cross-platform audience rating - Weighted audience rating 63.0
  • Committee investment depth - Committee investment: 5 committee member(s), music label on committee, international distributor on committee
Runway
Ok

Source runway looks healthy for a continuation.

Financial & Commercial70
Production Feasibility24
Audience Reception63
Strategic Priors35
Fandom Engagement0

CourScore history

CourScore over time

Last analysedJun 3, 2026, 11:25 PM
Next scheduledin 22 hours
Latest signals

Fresh telemetry

Courcast watches every connected signal to surface the freshest indicators of momentum.

SourceMetricGeoValueCollected
shikimoriscore meanGLOBAL64.9Jun 3, 2026, 12:00 AM
kitsufavoritesGLOBAL43Jun 1, 2026, 12:00 AM
kitsurating rankGLOBAL9,324Jun 1, 2026, 12:00 AM
kitsumember countGLOBAL18,027Jun 1, 2026, 12:00 AM
kitsuscore meanGLOBAL64.52Jun 1, 2026, 12:00 AM
mangadexsource status codeGLOBAL3May 23, 2026, 12:00 AM
mangaupdatesbayesian ratingGLOBAL6.32May 23, 2026, 12:00 AM
mangadexvolumes totalGLOBAL5May 23, 2026, 12:00 AM
wikipediapageviews dailyEN.WIKIPEDIA21Apr 30, 2026, 12:00 AM
malplan to watchGLOBAL56,891May 25, 2026, 12:00 AM
youtubeuploads 7dGLOBAL25May 22, 2026, 12:00 AM
youtubeviews 7dGLOBAL23,317May 22, 2026, 12:00 AM
mangadexchapters totalGLOBAL27May 23, 2026, 12:00 AM
malcompletedGLOBAL140,427May 25, 2026, 12:00 AM
youtubeuploads 30dGLOBAL25May 22, 2026, 12:00 AM
anilistaverage scoreGLOBAL60Jun 3, 2026, 12:00 AM
anilisttrendingGLOBAL1Jun 3, 2026, 12:00 AM
anilistpopularityGLOBAL44,255Jun 3, 2026, 12:00 AM
malwatchingGLOBAL12,758May 25, 2026, 12:00 AM
tmdbvote countGLOBAL24Jun 1, 2026, 12:00 AM
anilistfavoritesGLOBAL295Jun 3, 2026, 12:00 AM
youtubesubscribers totalGLOBAL6May 22, 2026, 12:00 AM
youtubechannel views totalGLOBAL3,222May 22, 2026, 12:00 AM
youtubeviews 30dGLOBAL23,317May 22, 2026, 12:00 AM
tmdbpopularityGLOBAL5.55Jun 1, 2026, 12:00 AM