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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
Jul 28, 2026, 06:46 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
36.1
CourScore is the probability of an official sequel announcement within 18 months.
Signal coverage: 100% • Signal freshness: Medium • Updated 7 hours ago
Top reasons
- Key staff availability - Director Mayumi Watanabe has no other concurrent active productions
- MAL community size - 3,016 MAL list entries (watching/completed/planned)
- Cross-platform popularity index - Aggregate reach of ~444 followers
Runway
Unknown
Source runway is unclear, so feasibility is treated as unknown.
Financial & Commercial33
Production Feasibility39
Audience Reception38
Strategic Priors14
Fandom Engagement67
CourScore history
CourScore over time
Last analysedJul 28, 2026, 06:46 AM
Next scheduledin 17 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 36% 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 Refrain Blue be renewed?
- Refrain Blue currently scores 36 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 Refrain Blue's renewal probability?
- Refrain Blue's CourScore is 36 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 |
|---|---|---|---|---|
| tmdb | vote count | GLOBAL | 4 | Jun 23, 2026, 12:00 AM |
| shikimori | score mean | GLOBAL | 0 | Jun 5, 2026, 12:00 AM |
| mangadex | source status code | GLOBAL | 2 | Jun 20, 2026, 12:00 AM |
| kitsu | favorites | GLOBAL | 1 | Apr 8, 2026, 12:00 AM |
| kitsu | member count | GLOBAL | 374 | Apr 8, 2026, 12:00 AM |
| kitsu | rating rank | GLOBAL | 11,086 | Apr 8, 2026, 12:00 AM |
| kitsu | score mean | GLOBAL | 61.04 | Apr 8, 2026, 12:00 AM |
| tmdb | popularity | GLOBAL | 0.67 | Jun 23, 2026, 12:00 AM |
| wikipedia | pageviews daily | EN.WIKIPEDIA | 3 | Jun 19, 2026, 12:00 AM |
| mal | completed | GLOBAL | 1,465 | Jun 16, 2026, 12:00 AM |
| anilist | trending | GLOBAL | 0 | Jun 22, 2026, 12:00 AM |
| mal | plan to watch | GLOBAL | 1,369 | Jun 16, 2026, 12:00 AM |
| anilist | average score | GLOBAL | 50 | Jun 22, 2026, 12:00 AM |
| youtube | channel views total | GLOBAL | 260,870 | Jun 17, 2026, 12:00 AM |
| youtube | views 30d | GLOBAL | 13,579 | Jun 17, 2026, 12:00 AM |
| mal | watching | GLOBAL | 182 | Jun 16, 2026, 12:00 AM |
| youtube | uploads 30d | GLOBAL | 25 | Jun 17, 2026, 12:00 AM |
| anilist | favorites | GLOBAL | 4 | Jun 22, 2026, 12:00 AM |
| youtube | subscribers total | GLOBAL | 1,290 | Jun 17, 2026, 12:00 AM |
| youtube | uploads 7d | GLOBAL | 25 | Jun 17, 2026, 12:00 AM |
| youtube | views 7d | GLOBAL | 13,579 | Jun 17, 2026, 12:00 AM |
| anilist | popularity | GLOBAL | 1,084 | Jun 22, 2026, 12:00 AM |
| ann | rating | GLOBAL | 6.51 | Jul 18, 2026, 12:00 AM |