concluded
Announced
In production
Releasing
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A trip to the beach turns out to be more than expected for two people who are mourning the losses of their beloved. Perhaps a mysterious girl known as the "Umi Warabe" can help them to heal their wounds and move on with their lives.
Yoshihiro Matsunaga is the chaperone for a group of high-school students on a summer trip to the beach. One night he saves one of the students, Nao Morisawa, as she attempts to drown herself. She had been on this same trip a year ago, with her fiancee, who was later killed in a plane crash. As these two get to know each other, we find that Yoshihiro also has a painful secret from his past. Watching over everything is a mysterious young girl who somehow is always there at decisive moments.
(Source: Anime News Network)
Yoshihiro Matsunaga is the chaperone for a group of high-school students on a summer trip to the beach. One night he saves one of the students, Nao Morisawa, as she attempts to drown herself. She had been on this same trip a year ago, with her fiancee, who was later killed in a plane crash. As these two get to know each other, we find that Yoshihiro also has a painful secret from his past. Watching over everything is a mysterious young girl who somehow is always there at decisive moments.
(Source: Anime News Network)
Last updated
Oct 28, 2026, 06:25 AM
Franchise overview
Franchise timeline
Review every Courcast-tracked season for this series and jump between entries.
Renewal pulse
Courcast score breakdown
CourScore weighs signals for an official sequel announcement within 18 months, blending attention velocity, completion strength, and catalogue health.
CourScore
16.2
CourScore measures renewal signals out of 100. It is not a calibrated probability of an official sequel announcement within 18 months.
Signal coverage: 100% • Signal freshness: Medium • Updated 8 hours ago
Top reasons
- Titles like this rarely return - 26 years with no new entry: of OVAs and specials (first entries) in that position, under 1% got a new season or film within 10 years
- Committee renewal track record - Lead committee members (Pink Pineapple) have a smoothed catalogue continuation rate of 0%, below the catalogue average of 14%
- Time since finale - ~318 months since estimated air window ended
Runway
Unknown
Source runway is unclear, so feasibility is treated as unknown.
Financial & Commercial50
Production Feasibility24
Audience Reception49
Strategic Priors19
Fandom Engagement40
CourScore history
CourScore over time
Last analysedOct 28, 2026, 06:25 AM
Next scheduledin 16 hours
Renewal FAQ
Refrain Blue renewal questions
Common questions about this title's renewal prospects, answered by Courcast's daily analysis.
- Is Refrain Blue getting a new season?
- According to Courcast's latest analysis, Refrain Blue has a 16/100 renewal signal score. 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 Refrain Blue be renewed?
- Refrain Blue currently scores 16 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. Scores from 70 indicate strong renewal signals; scores from 85 are labelled very likely.
- What is Refrain Blue's renewal probability?
- Refrain Blue's CourScore is 16 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 signal score 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 | 50 | Oct 8, 2026, 12:00 AM |
| anilist | favorites | GLOBAL | 5 | Oct 8, 2026, 12:00 AM |
| anilist | popularity | GLOBAL | 1,126 | Oct 8, 2026, 12:00 AM |
| anilist | trending | GLOBAL | 0 | Oct 8, 2026, 12:00 AM |
| ann | rating | GLOBAL | 6.51 | Oct 25, 2026, 12:00 AM |
| crunchyroll | episode count | GLOBAL | 12 | Sep 10, 2026, 12:00 AM |
| crunchyroll | episode dislikes | GLOBAL | 33 | Sep 10, 2026, 12:00 AM |
| crunchyroll | episode likes | GLOBAL | 460 | Sep 10, 2026, 12:00 AM |
| crunchyroll | series available | GLOBAL | 1 | Sep 10, 2026, 12:00 AM |
| google trends | interest daily | GLOBAL | 0 | Sep 23, 2026, 12:00 AM |
| google trends | interest weekly | GLOBAL | 30 | Sep 13, 2026, 12:00 AM |
| kitsu | favorites | GLOBAL | 1 | Oct 8, 2026, 12:00 AM |
| kitsu | member count | GLOBAL | 378 | Oct 8, 2026, 12:00 AM |
| kitsu | rating rank | GLOBAL | 11,476 | Oct 8, 2026, 12:00 AM |
| kitsu | score mean | GLOBAL | 61.17 | Oct 8, 2026, 12:00 AM |
| mal | completed | GLOBAL | 1,490 | Oct 8, 2026, 12:00 AM |
| mal | members | GLOBAL | 3,328 | Oct 8, 2026, 12:00 AM |
| mal | plan to watch | GLOBAL | 1,392 | Oct 8, 2026, 12:00 AM |
| mal | source members | GLOBAL | 311 | Aug 27, 2026, 12:00 AM |
| mal | source status code | GLOBAL | 2 | Aug 27, 2026, 12:00 AM |
| mal | watching | GLOBAL | 184 | Oct 8, 2026, 12:00 AM |
| mangadex | source status code | GLOBAL | 2 | Jun 20, 2026, 12:00 AM |
| mfc | figures total | GLOBAL | 0 | Oct 23, 2026, 12:00 AM |
| mfc | goods total | GLOBAL | 0 | Oct 23, 2026, 12:00 AM |
| mfc | media total | GLOBAL | 1 | Oct 23, 2026, 12:00 AM |
| mfc | merch total | GLOBAL | 1 | Oct 23, 2026, 12:00 AM |
| niconico | episode comments | JP | 748 | Oct 8, 2026, 12:00 AM |
| niconico | episode mylists | JP | 1,148 | Oct 8, 2026, 12:00 AM |
| niconico | episode views | JP | 76,314 | Oct 8, 2026, 12:00 AM |
| comments 7d | GLOBAL | 5 | Sep 24, 2026, 12:00 AM | |
| mentions 7d | GLOBAL | 1 | Sep 24, 2026, 12:00 AM | |
| score 7d | GLOBAL | 1 | Sep 24, 2026, 12:00 AM | |
| thread count | GLOBAL | 1 | Sep 24, 2026, 12:00 AM | |
| threads 7d | GLOBAL | 1 | Sep 24, 2026, 12:00 AM | |
| shikimori | completion ratio | GLOBAL | 0.3 | Oct 8, 2026, 12:00 AM |
| shikimori | member count | GLOBAL | 478 | Oct 8, 2026, 12:00 AM |
| shikimori | score mean | GLOBAL | 58.9 | Oct 8, 2026, 12:00 AM |
| simkl | score mean | GLOBAL | 57 | Sep 24, 2026, 12:00 AM |
| tmdb | popularity | GLOBAL | 1.72 | Oct 8, 2026, 12:00 AM |
| tmdb | vote count | GLOBAL | 4 | Oct 8, 2026, 12:00 AM |
| wikipedia | pageviews daily | EN.WIKIPEDIA | 2 | Oct 27, 2026, 12:00 AM |
| youtube | channel views total | GLOBAL | 260,870 | Jun 17, 2026, 12:00 AM |
| youtube | subscribers total | GLOBAL | 1,290 | Jun 17, 2026, 12:00 AM |
| youtube | uploads 30d | GLOBAL | 25 | Jun 17, 2026, 12:00 AM |
| youtube | uploads 7d | GLOBAL | 25 | Jun 17, 2026, 12:00 AM |
| youtube | views 30d | GLOBAL | 13,579 | Jun 17, 2026, 12:00 AM |
| youtube | views 7d | GLOBAL | 13,579 | Jun 17, 2026, 12:00 AM |