Aliases
Shirotan: Shirotan ga Ippai!, しろたん しろたんがいっぱい!, Sirotan, Sirotan: Sirotan ga Ippai!, Sirotan: Shirotan ga Ippai!
S1SUMMER 2017ONA
Part of this franchise
concluded
Announced
In production
Releasing
Completed
Described as a "soft and fluffy" story, the anime features the adventures of Sirotan, a baby seal who likes to nap and dream about many different relaxing activities.
(Source: Crunchyroll)
(Source: Crunchyroll)
Last updated
Jul 28, 2026, 02:35 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
38.3
CourScore is the probability of an official sequel announcement within 18 months.
Signal coverage: 100% • Signal freshness: High • Updated 4 hours ago
Top reasons
- Cross-platform audience rating - Weighted audience rating 66.3
- Key staff availability - Director Mariko Tokunaga has no other concurrent active productions
- Official social silence (negative signal) - Official JP account active (last post 15d ago)
Runway
Unknown
Source runway is unclear, so feasibility is treated as unknown.
Financial & Commercial27
Production Feasibility39
Audience Reception65
Strategic Priors31
Fandom Engagement27
CourScore history
CourScore over time
Last analysedJul 28, 2026, 02:35 PM
Next scheduledin 20 hours
Renewal FAQ
Sirotan: Sirotan ga Ippai! renewal questions
Common questions about this title's renewal prospects, answered by Courcast's daily analysis.
- Is Sirotan: Sirotan ga Ippai! getting a new season?
- According to Courcast's latest analysis, Sirotan: Sirotan ga Ippai! has a 38% 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 Sirotan: Sirotan ga Ippai! be renewed?
- Sirotan: Sirotan ga Ippai! currently scores 38 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 Sirotan: Sirotan ga Ippai!'s renewal probability?
- Sirotan: Sirotan ga Ippai!'s CourScore is 38 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 |
|---|---|---|---|---|
| wikipedia | pageviews daily | EN.WIKIPEDIA | 6 | Jun 14, 2026, 12:00 AM |
| tmdb | vote count | GLOBAL | 3 | Jun 23, 2026, 12:00 AM |
| mentions 7d | GLOBAL | 1 | Jul 5, 2026, 12:00 AM | |
| score 7d | GLOBAL | 10 | Jul 5, 2026, 12:00 AM | |
| thread count | GLOBAL | 1 | Jul 5, 2026, 12:00 AM | |
| tmdb | popularity | GLOBAL | 4.03 | Jun 23, 2026, 12:00 AM |
| threads 7d | GLOBAL | 1 | Jul 5, 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 |
| niconico | episode comments | JP | 1,258 | Jul 21, 2026, 12:00 AM |
| niconico | episode mylists | JP | 1,206 | Jul 21, 2026, 12:00 AM |
| filmarks | mark count | JP | 2 | Jul 21, 2026, 12:00 AM |
| filmarks | score mean | JP | 86 | Jul 21, 2026, 12:00 AM |
| crunchyroll | series available | GLOBAL | 1 | Jul 21, 2026, 12:00 AM |
| niconico | episode views | JP | 131,656 | Jul 21, 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 7d | GLOBAL | 13,579 | Jun 17, 2026, 12:00 AM |
| anilist | trending | GLOBAL | 0 | Jul 22, 2026, 12:00 AM |
| x | followers count | GLOBAL | 108,203 | Jul 20, 2026, 12:00 AM |
| x official jp | silent days | JP | 15 | Jul 20, 2026, 12:00 AM |
| shikimori | member count | GLOBAL | 211 | Jul 22, 2026, 12:00 AM |
| mal | members | GLOBAL | 544 | Jul 22, 2026, 12:00 AM |
| mal | watching | GLOBAL | 49 | Jul 22, 2026, 12:00 AM |
| google trends | interest daily | GLOBAL | 1 | Jul 19, 2026, 12:00 AM |
| google trends | interest weekly | GLOBAL | 1 | Jul 12, 2026, 12:00 AM |
| mal | completed | GLOBAL | 187 | Jul 22, 2026, 12:00 AM |
| kitsu | member count | GLOBAL | 101 | Jul 22, 2026, 12:00 AM |
| mal | plan to watch | GLOBAL | 187 | Jul 22, 2026, 12:00 AM |
| shikimori | score mean | GLOBAL | 61.6 | Jul 22, 2026, 12:00 AM |
| anilist | average score | GLOBAL | 46 | Jul 22, 2026, 12:00 AM |
| anilist | popularity | GLOBAL | 250 | Jul 22, 2026, 12:00 AM |
| shikimori | completion ratio | GLOBAL | 0.06 | Jul 22, 2026, 12:00 AM |
| anilist | favorites | GLOBAL | 1 | Jul 22, 2026, 12:00 AM |