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
Aug 31, 2026, 07:02 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
51.5
CourScore is the probability of an official sequel announcement within 18 months.
Signal coverage: 100% • Signal freshness: High • Updated 12 days ago
Top reasons
- Cross-platform popularity index - Aggregate reach of ~59,206 followers
- Cross-platform audience rating - Weighted audience rating 70.2
- Trailer reception (YouTube) - Official trailer has 669,884 views
Runway
Low
Source runway looks tight, so near-term sequel odds are capped.
Financial & Commercial51
Production Feasibility46
Audience Reception74
Strategic Priors46
Fandom Engagement24
CourScore history
CourScore over time
Last analysedAug 31, 2026, 07:02 AM
Next scheduled11 days 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 |
|---|---|---|---|---|
| anilist | average score | GLOBAL | 70 | Sep 4, 2026, 12:00 AM |
| anilist | favorites | GLOBAL | 613 | Sep 4, 2026, 12:00 AM |
| anilist | popularity | GLOBAL | 52,533 | Sep 4, 2026, 12:00 AM |
| anilist | trending | GLOBAL | 0 | Sep 4, 2026, 12:00 AM |
| ann | rating | GLOBAL | 7.16 | Aug 15, 2026, 12:00 AM |
| crunchyroll | episode count | GLOBAL | 12 | Sep 11, 2026, 12:00 AM |
| crunchyroll | episode dislikes | GLOBAL | 1,825 | Sep 11, 2026, 12:00 AM |
| crunchyroll | episode likes | GLOBAL | 10,121 | Sep 11, 2026, 12:00 AM |
| crunchyroll | series available | GLOBAL | 1 | Sep 11, 2026, 12:00 AM |
| filmarks | mark count | JP | 1,354 | Sep 11, 2026, 12:00 AM |
| filmarks | score mean | JP | 70 | Sep 11, 2026, 12:00 AM |
| google trends | interest daily | GLOBAL | 12 | Sep 10, 2026, 12:00 AM |
| google trends | interest weekly | GLOBAL | 63 | Aug 30, 2026, 12:00 AM |
| justwatch | jp platform count | JP | 2 | Sep 11, 2026, 12:00 AM |
| kitsu | favorites | GLOBAL | 5 | Sep 11, 2026, 12:00 AM |
| kitsu | member count | GLOBAL | 2,596 | Sep 11, 2026, 12:00 AM |
| kitsu | rating rank | GLOBAL | 7,384 | Sep 11, 2026, 12:00 AM |
| kitsu | score mean | GLOBAL | 67.52 | Sep 11, 2026, 12:00 AM |
| mal | chapters total | GLOBAL | 80 | Sep 10, 2026, 12:00 AM |
| mal | completed | GLOBAL | 137,223 | Sep 11, 2026, 12:00 AM |
| mal | members | GLOBAL | 248,123 | Sep 11, 2026, 12:00 AM |
| mal | plan to watch | GLOBAL | 78,109 | Sep 11, 2026, 12:00 AM |
| mal | rating | GLOBAL | 7.96 | Sep 10, 2026, 12:00 AM |
| mal | source members | GLOBAL | 43,759 | Sep 10, 2026, 12:00 AM |
| mal | source status code | GLOBAL | 3 | Sep 10, 2026, 12:00 AM |
| mal | volumes total | GLOBAL | 16 | Sep 10, 2026, 12:00 AM |
| mal | watching | GLOBAL | 15,976 | Sep 11, 2026, 12:00 AM |
| mangacodex | bd sales avg | JP | 294 | Sep 6, 2026, 12:00 AM |
| mangacodex | manga circulation | JP | 3,680,000 | Sep 6, 2026, 12:00 AM |
| mangacodex | manga latest volume sales | JP | 77,600 | Sep 6, 2026, 12:00 AM |
| mangacodex | manga volume trend pct | JP | -32.99 | Sep 6, 2026, 12:00 AM |
| mangadex | chapters total | GLOBAL | 57.5 | Sep 10, 2026, 12:00 AM |
| mangadex | source status code | GLOBAL | 3 | Sep 10, 2026, 12:00 AM |
| mangadex | volumes total | GLOBAL | 16 | Sep 10, 2026, 12:00 AM |
| mangaupdates | bayesian rating | GLOBAL | 6.46 | Sep 10, 2026, 12:00 AM |
| niconico | episode comments | JP | 69,200 | Sep 11, 2026, 12:00 AM |
| niconico | episode mylists | JP | 5,340 | Sep 11, 2026, 12:00 AM |
| niconico | episode views | JP | 1,016,298 | Sep 11, 2026, 12:00 AM |
| comments 7d | GLOBAL | 9 | Aug 7, 2026, 12:00 AM | |
| mentions 1d | GLOBAL | 1 | Jul 22, 2026, 12:00 AM | |
| mentions 7d | GLOBAL | 1 | Aug 7, 2026, 12:00 AM | |
| score 7d | GLOBAL | 32 | Jul 22, 2026, 12:00 AM | |
| thread count | GLOBAL | 1 | Aug 7, 2026, 12:00 AM | |
| threads 7d | GLOBAL | 1 | Aug 7, 2026, 12:00 AM | |
| shikimori | completion ratio | GLOBAL | 0.57 | Sep 11, 2026, 12:00 AM |
| shikimori | member count | GLOBAL | 27,012 | Sep 11, 2026, 12:00 AM |
| shikimori | score mean | GLOBAL | 72.6 | Sep 11, 2026, 12:00 AM |
| simkl | score mean | GLOBAL | 71 | Sep 4, 2026, 12:00 AM |
| tmdb | popularity | GLOBAL | 3.84 | Sep 11, 2026, 12:00 AM |
| tmdb | vote count | GLOBAL | 23 | Sep 11, 2026, 12:00 AM |
| wikipedia | pageviews daily | EN.WIKIPEDIA | 16 | Aug 26, 2026, 12:00 AM |
| x official jp | silent days | JP | 3,317 | Jul 20, 2026, 12:00 AM |
| youtube | channel views total | GLOBAL | 0 | Jun 29, 2026, 12:00 AM |
| youtube | subscribers total | GLOBAL | 0 | Jun 29, 2026, 12:00 AM |
| youtube | trailer likes | GLOBAL | 3,866 | Sep 11, 2026, 12:00 AM |
| youtube | trailer views | GLOBAL | 670,073 | Sep 11, 2026, 12:00 AM |
| youtube | uploads 30d | GLOBAL | 25 | Jun 29, 2026, 12:00 AM |
| youtube | uploads 7d | GLOBAL | 25 | Jun 29, 2026, 12:00 AM |
| youtube | views 30d | GLOBAL | 20,721 | Jun 29, 2026, 12:00 AM |
| youtube | views 7d | GLOBAL | 20,721 | Jun 29, 2026, 12:00 AM |