Aliases
Onii-chan is Done For!, ONIMAI: Sekarang Aku Kakak Perempuanmu!, อวสานพี่ชาย กลายเป็นพี่สาว, 不當哥哥了！, Я стал сестрой!, ONIMAI: Ab sofort Schwester!, Onii-chan wa Oshimai!, ONIMAI: I'm Now Your Sister!, お兄ちゃんはおしまい！, Oniichan wa Oshimai!, Onimai, Onii-chan is Done For, 오빠는 끝!
S1WINTER 2023TV
Branch
Part of this franchise
concluded
Announced
In production
Releasing
Completed
Mahiro Oyama was just a normal erotic-game loving dude…until he woke up one morning as a woman! Turns out his mad-scientist little sister, Mihari, tried out one of her new experiments on him…with a disastrous outcome, as far as Mahiro’s concerned! But Mihari is as determined to study him as he is determined to go back to his shut-in, game-playing life, and one thing’s for sure…life is going to get a whole lot weirder from here on out!
(Source: Kodansha USA)
(Source: Kodansha USA)
Last updated
Aug 31, 2026, 03:19 AM
Franchise overview
Franchise timeline
Review every Courcast-tracked season for this series and jump between entries.
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
62.5
CourScore is the probability of an official sequel announcement within 18 months.
Signal coverage: 100% • Signal freshness: High • Updated 12 days ago
Top reasons
- Source runway - Source material runway assessed as 'ok'
- Trailer reception (YouTube) - Official trailer has 848,227 views
- Cross-platform audience rating - Weighted audience rating 77.4
Runway
Ok
Source runway looks healthy for a continuation.
Financial & Commercial59
Production Feasibility60
Audience Reception87
Strategic Priors63
Fandom Engagement23
CourScore history
CourScore over time
Last analysedAug 31, 2026, 03:19 AM
Next scheduled11 days ago
Renewal FAQ
ONIMAI: I'm Now Your Sister! renewal questions
Common questions about this title's renewal prospects, answered by Courcast's daily analysis.
- Is ONIMAI: I'm Now Your Sister! getting a new season?
- According to Courcast's latest analysis, ONIMAI: I'm Now Your Sister! has a 63% renewal probability. This score is updated daily and blends fandom momentum, streaming signals, source-material runway, and franchise history. Check back regularly for the latest forecast.
- Will ONIMAI: I'm Now Your Sister! be renewed?
- ONIMAI: I'm Now Your Sister! currently scores 63 out of 100 on Courcast. Signals driving this estimate include online discussion volume, sequel history within the franchise, and platform engagement data - all recalculated daily. Titles scoring above 70 are considered Very Likely to receive a continuation.
- What is ONIMAI: I'm Now Your Sister!'s renewal probability?
- ONIMAI: I'm Now Your Sister!'s CourScore is 63 as of the latest update. CourScore is Courcast's proprietary metric that aggregates over a dozen renewal signals - from source-material runway to social buzz - into a single daily-updated probability out of 100.
Latest signals
Fresh telemetry
Courcast watches every connected signal to surface the freshest indicators of momentum.
| Source | Metric | Geo | Value | Collected |
|---|---|---|---|---|
| anilist | average score | GLOBAL | 75 | Sep 5, 2026, 12:00 AM |
| anilist | favorites | GLOBAL | 3,073 | Sep 5, 2026, 12:00 AM |
| anilist | popularity | GLOBAL | 73,906 | Sep 5, 2026, 12:00 AM |
| anilist | trending | GLOBAL | 2 | Sep 5, 2026, 12:00 AM |
| ann | rating | GLOBAL | 7.4 | Aug 15, 2026, 12:00 AM |
| crunchyroll | episode count | GLOBAL | 12 | Sep 5, 2026, 12:00 AM |
| crunchyroll | episode dislikes | GLOBAL | 150 | Sep 5, 2026, 12:00 AM |
| crunchyroll | episode likes | GLOBAL | 9,648 | Sep 5, 2026, 12:00 AM |
| crunchyroll | series available | GLOBAL | 1 | Sep 5, 2026, 12:00 AM |
| filmarks | mark count | JP | 3,483 | Sep 5, 2026, 12:00 AM |
| filmarks | score mean | JP | 80 | Sep 5, 2026, 12:00 AM |
| google trends | interest daily | GLOBAL | 5 | Sep 4, 2026, 12:00 AM |
| google trends | interest weekly | GLOBAL | 25 | Aug 23, 2026, 12:00 AM |
| justwatch | jp platform count | JP | 1 | Sep 5, 2026, 12:00 AM |
| kitsu | favorites | GLOBAL | 43 | Sep 5, 2026, 12:00 AM |
| kitsu | member count | GLOBAL | 4,477 | Sep 5, 2026, 12:00 AM |
| kitsu | rating rank | GLOBAL | 2,005 | Sep 5, 2026, 12:00 AM |
| kitsu | score mean | GLOBAL | 76.12 | Sep 5, 2026, 12:00 AM |
| mal | completed | GLOBAL | 106,416 | Sep 5, 2026, 12:00 AM |
| mal | members | GLOBAL | 194,807 | Sep 5, 2026, 12:00 AM |
| mal | plan to watch | GLOBAL | 50,733 | Sep 5, 2026, 12:00 AM |
| mal | rating | GLOBAL | 7.87 | Aug 27, 2026, 12:00 AM |
| mal | source members | GLOBAL | 25,159 | Aug 27, 2026, 12:00 AM |
| mal | source status code | GLOBAL | 2 | Aug 27, 2026, 12:00 AM |
| mal | watching | GLOBAL | 20,165 | Sep 5, 2026, 12:00 AM |
| mangacodex | manga circulation | JP | 500,000 | Sep 6, 2026, 12:00 AM |
| mangacodex | manga latest volume sales | JP | 11,100 | Sep 6, 2026, 12:00 AM |
| mangacodex | manga volume trend pct | JP | -21.83 | Sep 6, 2026, 12:00 AM |
| mangadex | source status code | GLOBAL | 2 | Sep 10, 2026, 12:00 AM |
| mangaupdates | bayesian rating | GLOBAL | 0 | Sep 10, 2026, 12:00 AM |
| niconico | episode comments | JP | 4,244,363 | Sep 5, 2026, 12:00 AM |
| niconico | episode mylists | JP | 17,320 | Sep 5, 2026, 12:00 AM |
| niconico | episode views | JP | 8,262,657 | Sep 5, 2026, 12:00 AM |
| comments 7d | GLOBAL | 91 | Aug 16, 2026, 12:00 AM | |
| mentions 1d | GLOBAL | 1 | Aug 4, 2026, 12:00 AM | |
| mentions 7d | GLOBAL | 1 | Aug 16, 2026, 12:00 AM | |
| score 7d | GLOBAL | 89 | Aug 16, 2026, 12:00 AM | |
| thread count | GLOBAL | 1 | Aug 16, 2026, 12:00 AM | |
| threads 7d | GLOBAL | 1 | Aug 16, 2026, 12:00 AM | |
| shikimori | completion ratio | GLOBAL | 0.65 | Sep 5, 2026, 12:00 AM |
| shikimori | member count | GLOBAL | 30,660 | Sep 5, 2026, 12:00 AM |
| shikimori | score mean | GLOBAL | 76.5 | Sep 5, 2026, 12:00 AM |
| simkl | score mean | GLOBAL | 75 | Aug 26, 2026, 12:00 AM |
| tmdb | popularity | GLOBAL | 13.59 | Sep 5, 2026, 12:00 AM |
| tmdb | vote count | GLOBAL | 66 | Sep 5, 2026, 12:00 AM |
| wikipedia | pageviews daily | EN.WIKIPEDIA | 272 | Aug 18, 2026, 12:00 AM |
| x | followers count | GLOBAL | 124,124 | Aug 20, 2026, 12:00 AM |
| x | followers delta | GLOBAL | -64 | Aug 20, 2026, 12:00 AM |
| x official jp | posts 7d | JP | 1 | Aug 12, 2026, 12:00 AM |
| x official jp | silent days | JP | 475 | Aug 20, 2026, 12:00 AM |
| youtube | channel views total | GLOBAL | 0 | Jun 29, 2026, 12:00 AM |
| youtube | subscribers total | GLOBAL | 0 | Jun 29, 2026, 12:00 AM |
| youtube | trailer views | GLOBAL | 848,725 | Sep 5, 2026, 12:00 AM |
| youtube | uploads 30d | GLOBAL | 25 | Jun 29, 2026, 12:00 AM |
| youtube | uploads 7d | GLOBAL | 25 | Jun 29, 2026, 12:00 AM |
| youtube | views 30d | GLOBAL | 20,721 | Jun 29, 2026, 12:00 AM |
| youtube | views 7d | GLOBAL | 20,721 | Jun 29, 2026, 12:00 AM |