Aliases
Shirotan: Shirotan ga Ippai!, しろたん しろたんがいっぱい!, 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
Oct 28, 2026, 06:22 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
18.2
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 11 hours ago
Top reasons
- Official JP social activity - Official JP account posted 11 times in the last 7 days
- Official social silence (negative signal) - Official JP account active (last post 15d ago)
- Official social momentum - Official channels follower delta
Runway
Unknown
Source runway is unclear, so feasibility is treated as unknown.
Financial & Commercial18
Production Feasibility24
Audience Reception29
Strategic Priors19
Fandom Engagement65
CourScore history
CourScore over time
Last analysedOct 28, 2026, 06:22 AM
Next scheduledin 13 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 18/100 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 Sirotan: Sirotan ga Ippai! be renewed?
- Sirotan: Sirotan ga Ippai! currently scores 18 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 Sirotan: Sirotan ga Ippai!'s renewal probability?
- Sirotan: Sirotan ga Ippai!'s CourScore is 18 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 | 47 | Oct 23, 2026, 12:00 AM |
| anilist | favorites | GLOBAL | 1 | Oct 23, 2026, 12:00 AM |
| anilist | popularity | GLOBAL | 270 | Oct 23, 2026, 12:00 AM |
| anilist | trending | GLOBAL | 0 | Oct 23, 2026, 12:00 AM |
| crunchyroll | series available | GLOBAL | 1 | Sep 25, 2026, 12:00 AM |
| filmarks | mark count | JP | 21 | Oct 23, 2026, 12:00 AM |
| filmarks | score mean | JP | 54 | Oct 23, 2026, 12:00 AM |
| google trends | interest daily | GLOBAL | 9 | Sep 10, 2026, 12:00 AM |
| google trends | interest weekly | GLOBAL | 52 | Aug 30, 2026, 12:00 AM |
| kitsu | member count | GLOBAL | 104 | Oct 23, 2026, 12:00 AM |
| mal | completed | GLOBAL | 195 | Oct 9, 2026, 12:00 AM |
| mal | members | GLOBAL | 573 | Oct 9, 2026, 12:00 AM |
| mal | plan to watch | GLOBAL | 197 | Oct 9, 2026, 12:00 AM |
| mal | watching | GLOBAL | 52 | Oct 9, 2026, 12:00 AM |
| niconico | episode comments | JP | 1,258 | Sep 11, 2026, 12:00 AM |
| niconico | episode mylists | JP | 1,206 | Sep 11, 2026, 12:00 AM |
| niconico | episode views | JP | 131,691 | Sep 11, 2026, 12:00 AM |
| comments 7d | GLOBAL | 258 | Sep 25, 2026, 12:00 AM | |
| mentions 7d | GLOBAL | 1 | Sep 25, 2026, 12:00 AM | |
| score 7d | GLOBAL | 2,439 | Sep 25, 2026, 12:00 AM | |
| thread count | GLOBAL | 1 | Sep 25, 2026, 12:00 AM | |
| threads 7d | GLOBAL | 1 | Sep 25, 2026, 12:00 AM | |
| shikimori | completion ratio | GLOBAL | 0.06 | Oct 23, 2026, 12:00 AM |
| shikimori | member count | GLOBAL | 217 | Oct 23, 2026, 12:00 AM |
| shikimori | score mean | GLOBAL | 62 | Oct 23, 2026, 12:00 AM |
| simkl | score mean | GLOBAL | 55 | Oct 9, 2026, 12:00 AM |
| tmdb | popularity | GLOBAL | 0.41 | Oct 23, 2026, 12:00 AM |
| tmdb | vote count | GLOBAL | 0 | Oct 23, 2026, 12:00 AM |
| wikipedia | pageviews daily | EN.WIKIPEDIA | 32 | Oct 27, 2026, 12:00 AM |
| x | followers count | GLOBAL | 109,131 | Sep 25, 2026, 12:00 AM |
| x | followers delta | GLOBAL | 928 | Sep 25, 2026, 12:00 AM |
| x official jp | posts 7d | JP | 11 | Jul 31, 2026, 12:00 AM |
| x official jp | silent days | JP | 15 | Sep 25, 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 |