Aliases
Kenkoo Zenrakei Suieibu Umishou, Umisho High School Naked Swimming Club, Umisho, Kenkou Zenrakei Suieibu Umishou, ケンコー全裸系水泳部 ウミショー, Kenkou Zenrakei Suiei-bu Umishou, Kenkou Zenra-kei Suiei-bu Umishou, Kenkoo Zenra-kei Suiei-bu Umishou
S1SUMMER 2007TV
Part of this franchise
concluded
Announced
In production
Releasing
Completed
Kaname Okiura, a student of Prefectoral Umineko Shougyou High ("Umishou" for short), joined the school's swimming club in order to learn how to swim, but the club is filled with weirdos, let alone who can teach him swimming. Then, a sunny, happy-go-lucky girl named Amuro Ninagawa who transferred from Okinawa joined the club. Her extraordinary underwater speed and unorthodox swimming style (plus her personal habit of nude swimming—a powerful magnet to teenage boys) surprised every club member, especially Okiura, because she reminds him of a mermaid-like creature he saw only once in his early childhood.
(Source: Anime News Network)
(Source: Anime News Network)
Last updated
Jul 28, 2026, 02:44 PM
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
62.8
CourScore is the probability of an official sequel announcement within 18 months.
Signal coverage: 100% • Signal freshness: High • Updated 2 hours ago
Top reasons
- Source runway - Source material runway assessed as 'ok'
- Studio bandwidth - Artland has no other concurrent active productions
- Cross-platform audience rating - Weighted audience rating 68.0
Runway
Ok
Source runway looks healthy for a continuation.
Financial & Commercial56
Production Feasibility68
Audience Reception68
Strategic Priors47
Fandom Engagement88
CourScore history
CourScore over time
Last analysedJul 28, 2026, 02:44 PM
Next scheduledin 4 hours
Renewal FAQ
Kenkou Zenrakei Suieibu Umishou renewal questions
Common questions about this title's renewal prospects, answered by Courcast's daily analysis.
- Is Kenkou Zenrakei Suieibu Umishou getting a new season?
- According to Courcast's latest analysis, Kenkou Zenrakei Suieibu Umishou 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 Kenkou Zenrakei Suieibu Umishou be renewed?
- Kenkou Zenrakei Suieibu Umishou 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 Kenkou Zenrakei Suieibu Umishou's renewal probability?
- Kenkou Zenrakei Suieibu Umishou'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 |
|---|---|---|---|---|
| filmarks | mark count | JP | 129 | Jun 6, 2026, 12:00 AM |
| youtube | channel views total | GLOBAL | 36,144,520 | Jun 27, 2026, 12:00 AM |
| youtube | views 30d | GLOBAL | 20,937 | Jun 27, 2026, 12:00 AM |
| filmarks | score mean | JP | 66 | Jun 6, 2026, 12:00 AM |
| youtube | subscribers total | GLOBAL | 42,100 | Jun 27, 2026, 12:00 AM |
| mangadex | source status code | GLOBAL | 3 | Jul 22, 2026, 12:00 AM |
| youtube | uploads 7d | GLOBAL | 25 | Jun 27, 2026, 12:00 AM |
| youtube | views 7d | GLOBAL | 20,937 | Jun 27, 2026, 12:00 AM |
| youtube | uploads 30d | GLOBAL | 25 | Jun 27, 2026, 12:00 AM |
| mangadex | volumes total | GLOBAL | 9 | Jul 22, 2026, 12:00 AM |
| wikipedia | pageviews daily | EN.WIKIPEDIA | 4 | Jul 27, 2026, 12:00 AM |
| justwatch | jp platform count | JP | 2 | Jul 15, 2026, 12:00 AM |
| kitsu | score mean | GLOBAL | 71.45 | Jul 21, 2026, 12:00 AM |
| shikimori | member count | GLOBAL | 5,574 | Jul 21, 2026, 12:00 AM |
| mal | completed | GLOBAL | 22,302 | Jul 21, 2026, 12:00 AM |
| tmdb | popularity | GLOBAL | 2.39 | Jul 21, 2026, 12:00 AM |
| mal | members | GLOBAL | 42,011 | Jul 21, 2026, 12:00 AM |
| mal | watching | GLOBAL | 2,259 | Jul 21, 2026, 12:00 AM |
| kitsu | rating rank | GLOBAL | 4,530 | Jul 21, 2026, 12:00 AM |
| kitsu | member count | GLOBAL | 3,767 | Jul 21, 2026, 12:00 AM |
| mal | plan to watch | GLOBAL | 14,298 | Jul 21, 2026, 12:00 AM |
| shikimori | score mean | GLOBAL | 71.3 | Jul 21, 2026, 12:00 AM |
| tmdb | vote count | GLOBAL | 12 | Jul 21, 2026, 12:00 AM |
| anilist | popularity | GLOBAL | 7,782 | Jul 21, 2026, 12:00 AM |
| shikimori | completion ratio | GLOBAL | 0.57 | Jul 21, 2026, 12:00 AM |
| anilist | average score | GLOBAL | 66 | Jul 21, 2026, 12:00 AM |
| kitsu | favorites | GLOBAL | 7 | Jul 21, 2026, 12:00 AM |
| anilist | favorites | GLOBAL | 50 | Jul 21, 2026, 12:00 AM |
| anilist | trending | GLOBAL | 0 | Jul 21, 2026, 12:00 AM |
| mangadex | chapters total | GLOBAL | 130 | Jul 22, 2026, 12:00 AM |
| mangaupdates | bayesian rating | GLOBAL | 6.03 | Jul 22, 2026, 12:00 AM |