Sekaiichi Hatsukoi Episode 0, Sekai-ichi Hatsukoi: Onodera Ritsu no Baai, Sekaiichi Hatsukoi Episode 12.5, Sekaiichi Hatsukoi: Yoshino Chiaki no Baai, Sekaiichi Hatsukoi OVA, 世界一初恋 OVA, Default, Synonym, Sekai'ichi Hatsukoi, Japanese
Sekaiichi Hatsukoi OVA
世界一初恋 OVA
Episode 0: Ritsu and Takano used to date back in high school, but broke up due to a misunderstanding. This is that story.
Episode 12.5: Hatori and Chiaki go to visit the latter's family. It's really awkward in many, many ways.
Last updated
Jun 3, 2026, 11:25 PM
Franchise timeline
Review every Courcast-tracked season for this series and jump between entries.
Courcast score breakdown
CourScore is the probability of an official sequel announcement within 18 months, blending attention velocity, completion strength, and catalogue health.
CourScore
43.8
CourScore is the probability of an official sequel announcement within 18 months.
Signal coverage: 92% • Signal freshness: High • Updated 1 hour ago
Top reasons
- Cross-platform audience rating - Weighted audience rating 76.9
- Cross-platform popularity index - Aggregate reach of ~4,473 followers
- IP reach across services - Multi-platform footprint of ~4,786 users
Source runway looks healthy for a continuation.
CourScore history
CourScore over time
Fresh telemetry
Courcast watches every connected signal to surface the freshest indicators of momentum.
| Source | Metric | Geo | Value | Collected |
|---|---|---|---|---|
| wikipedia | pageviews daily | EN.WIKIPEDIA | 21 | Apr 30, 2026, 12:00 AM |
| mal | plan to watch | GLOBAL | 9,483 | May 28, 2026, 12:00 AM |
| mal | watching | GLOBAL | 2,212 | May 28, 2026, 12:00 AM |
| mal | completed | GLOBAL | 61,874 | May 28, 2026, 12:00 AM |
| mangaupdates | bayesian rating | GLOBAL | 8.52 | May 23, 2026, 12:00 AM |
| shikimori | score mean | GLOBAL | 78.4 | May 16, 2026, 12:00 AM |
| kitsu | favorites | GLOBAL | 41 | May 22, 2026, 12:00 AM |
| youtube | channel views total | GLOBAL | 3,222 | May 22, 2026, 12:00 AM |
| youtube | views 30d | GLOBAL | 23,317 | May 22, 2026, 12:00 AM |
| youtube | uploads 7d | GLOBAL | 25 | May 22, 2026, 12:00 AM |
| youtube | views 7d | GLOBAL | 23,317 | May 22, 2026, 12:00 AM |
| anilist | average score | GLOBAL | 73 | May 31, 2026, 12:00 AM |
| anilist | favorites | GLOBAL | 90 | May 31, 2026, 12:00 AM |
| tmdb | popularity | GLOBAL | 7.59 | Jun 1, 2026, 12:00 AM |
| youtube | subscribers total | GLOBAL | 6 | May 22, 2026, 12:00 AM |
| kitsu | score mean | GLOBAL | 79.96 | May 22, 2026, 12:00 AM |
| kitsu | member count | GLOBAL | 7,824 | May 22, 2026, 12:00 AM |
| youtube | uploads 30d | GLOBAL | 25 | May 22, 2026, 12:00 AM |
| kitsu | rating rank | GLOBAL | 842 | May 22, 2026, 12:00 AM |
| tmdb | vote count | GLOBAL | 28 | Jun 1, 2026, 12:00 AM |
| anilist | popularity | GLOBAL | 9,047 | May 31, 2026, 12:00 AM |
| anilist | trending | GLOBAL | 0 | May 31, 2026, 12:00 AM |