Aliases
Niji-iro Days, Beztroskie dni, รักสุดใจคนวัยซ่า, Nijiiro Days, Rainbow Days, 虹色デイズ
S1WINTER 2016TV_SHORT
Branch
Part of this franchise
concluded
Announced
In production
Releasing
Completed
Nijiiro Days follows the colorful lives and romantic relationships of four high school boys—Natsuki Hashiba, a dreamer with delusions of love; Tomoya Matsunaga, a narcissistic playboy who has multiple girlfriends; Keiichi Katakura, a kinky sadist who always carries a whip; and Tsuyoshi Naoe, an otaku who has a cosplaying girlfriend.
When his girlfriend unceremoniously dumps him on Christmas Eve, Natsuki breaks down in tears in the middle of the street and is offered tissues by a girl in a Santa Claus suit. He instantly falls in love with this girl, Anna Kobayakawa, who fortunately attends the same school as him. Natsuki's pursuit of Anna should have been simple and uneventful; however, much to his dismay, his nosy friends constantly meddle in his relationship, as they strive to succeed in their own endeavors of love.
[Written by MAL Rewrite]
When his girlfriend unceremoniously dumps him on Christmas Eve, Natsuki breaks down in tears in the middle of the street and is offered tissues by a girl in a Santa Claus suit. He instantly falls in love with this girl, Anna Kobayakawa, who fortunately attends the same school as him. Natsuki's pursuit of Anna should have been simple and uneventful; however, much to his dismay, his nosy friends constantly meddle in his relationship, as they strive to succeed in their own endeavors of love.
[Written by MAL Rewrite]
Last updated
Jul 27, 2026, 03:46 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
51.3
CourScore is the probability of an official sequel announcement within 18 months.
Signal coverage: 100% • Signal freshness: High • Updated yesterday
Top reasons
- Cross-platform popularity index - Aggregate reach of ~59,052 followers
- Cross-platform audience rating - Weighted audience rating 70.2
- Trailer reception (YouTube) - Official trailer has 669,478 views
Runway
Low
Source runway looks tight, so near-term sequel odds are capped.
Financial & Commercial51
Production Feasibility46
Audience Reception74
Strategic Priors46
Fandom Engagement21
CourScore history
CourScore over time
Last analysedJul 27, 2026, 03:46 PM
Next scheduled4 hours ago
Renewal FAQ
Rainbow Days renewal questions
Common questions about this title's renewal prospects, answered by Courcast's daily analysis.
- Is Rainbow Days getting a new season?
- According to Courcast's latest analysis, Rainbow Days has a 51% 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 Rainbow Days be renewed?
- Rainbow Days currently scores 51 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 Rainbow Days's renewal probability?
- Rainbow Days's CourScore is 51 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 |
|---|---|---|---|---|
| mal | completed | GLOBAL | 136,927 | Jul 20, 2026, 12:00 AM |
| comments 7d | GLOBAL | 56 | Jul 22, 2026, 12:00 AM | |
| anilist | trending | GLOBAL | 1 | Jul 22, 2026, 12:00 AM |
| mal | source status code | GLOBAL | 3 | Jul 22, 2026, 12:00 AM |
| score 7d | GLOBAL | 32 | Jul 22, 2026, 12:00 AM | |
| filmarks | score mean | JP | 70 | Jul 20, 2026, 12:00 AM |
| filmarks | mark count | JP | 1,342 | Jul 20, 2026, 12:00 AM |
| google trends | interest weekly | GLOBAL | 37 | Jul 12, 2026, 12:00 AM |
| crunchyroll | episode likes | GLOBAL | 9,754 | Jul 20, 2026, 12:00 AM |
| niconico | episode comments | JP | 69,200 | Jul 20, 2026, 12:00 AM |
| crunchyroll | episode count | GLOBAL | 12 | Jul 20, 2026, 12:00 AM |
| thread count | GLOBAL | 1 | Jul 22, 2026, 12:00 AM | |
| crunchyroll | episode dislikes | GLOBAL | 1,799 | Jul 20, 2026, 12:00 AM |
| niconico | episode mylists | JP | 5,340 | Jul 20, 2026, 12:00 AM |
| tmdb | popularity | GLOBAL | 3.01 | Jul 22, 2026, 12:00 AM |
| mangadex | source status code | GLOBAL | 3 | Jul 22, 2026, 12:00 AM |
| crunchyroll | series available | GLOBAL | 1 | Jul 20, 2026, 12:00 AM |
| niconico | episode views | JP | 1,016,026 | Jul 20, 2026, 12:00 AM |
| justwatch | jp platform count | JP | 2 | Jul 20, 2026, 12:00 AM |
| anilist | favorites | GLOBAL | 617 | Jul 22, 2026, 12:00 AM |
| mal | source members | GLOBAL | 43,645 | Jul 22, 2026, 12:00 AM |
| google trends | interest daily | GLOBAL | 0 | Jul 19, 2026, 12:00 AM |
| mal | plan to watch | GLOBAL | 77,840 | Jul 20, 2026, 12:00 AM |
| x official jp | silent days | JP | 3,317 | Jul 20, 2026, 12:00 AM |
| anilist | average score | GLOBAL | 70 | Jul 22, 2026, 12:00 AM |
| kitsu | favorites | GLOBAL | 5 | Jul 22, 2026, 12:00 AM |
| mal | volumes total | GLOBAL | 16 | Jul 22, 2026, 12:00 AM |
| mangaupdates | bayesian rating | GLOBAL | 6.46 | Jul 22, 2026, 12:00 AM |
| wikipedia | pageviews daily | EN.WIKIPEDIA | 14 | Jun 6, 2026, 12:00 AM |
| youtube | uploads 7d | GLOBAL | 25 | Jun 29, 2026, 12:00 AM |
| youtube | views 7d | GLOBAL | 20,721 | Jun 29, 2026, 12:00 AM |
| youtube | channel views total | GLOBAL | 0 | Jun 29, 2026, 12:00 AM |
| youtube | views 30d | GLOBAL | 20,721 | Jun 29, 2026, 12:00 AM |
| youtube | trailer views | GLOBAL | 669,478 | Jul 22, 2026, 12:00 AM |
| youtube | subscribers total | GLOBAL | 0 | Jun 29, 2026, 12:00 AM |
| youtube | uploads 30d | GLOBAL | 25 | Jun 29, 2026, 12:00 AM |
| kitsu | score mean | GLOBAL | 67.54 | Jul 22, 2026, 12:00 AM |
| mal | chapters total | GLOBAL | 80 | Jul 22, 2026, 12:00 AM |
| shikimori | member count | GLOBAL | 26,964 | Jul 22, 2026, 12:00 AM |
| youtube | trailer likes | GLOBAL | 3,863 | Jul 22, 2026, 12:00 AM |
| mal | rating | GLOBAL | 7.96 | Jul 22, 2026, 12:00 AM |
| kitsu | rating rank | GLOBAL | 7,322 | Jul 22, 2026, 12:00 AM |
| mangacodex | bd sales avg | JP | 294 | Jul 25, 2026, 12:00 AM |
| mangadex | volumes total | GLOBAL | 16 | Jul 22, 2026, 12:00 AM |
| mal | watching | GLOBAL | 15,971 | Jul 20, 2026, 12:00 AM |
| mal | members | GLOBAL | 247,536 | Jul 20, 2026, 12:00 AM |
| mentions 7d | GLOBAL | 1 | Jul 22, 2026, 12:00 AM | |
| kitsu | member count | GLOBAL | 2,594 | Jul 22, 2026, 12:00 AM |
| mentions 1d | GLOBAL | 1 | Jul 22, 2026, 12:00 AM | |
| shikimori | score mean | GLOBAL | 72.6 | Jul 22, 2026, 12:00 AM |
| anilist | popularity | GLOBAL | 52,087 | Jul 22, 2026, 12:00 AM |
| threads 7d | GLOBAL | 1 | Jul 22, 2026, 12:00 AM | |
| shikimori | completion ratio | GLOBAL | 0.57 | Jul 22, 2026, 12:00 AM |
| mangacodex | manga circulation | JP | 3,680,000 | Jul 25, 2026, 12:00 AM |
| mangadex | chapters total | GLOBAL | 57.5 | Jul 22, 2026, 12:00 AM |
| tmdb | vote count | GLOBAL | 22 | Jul 22, 2026, 12:00 AM |
| mangacodex | manga latest volume sales | JP | 77,600 | Jul 25, 2026, 12:00 AM |
| simkl | score mean | GLOBAL | 71 | Jul 17, 2026, 12:00 AM |
| ann | rating | GLOBAL | 7.16 | Jul 18, 2026, 12:00 AM |
| mangacodex | manga volume trend pct | JP | -32.99 | Jul 25, 2026, 12:00 AM |