Overall score 8.1
Rank #1
KILL BLUE
Kill Ao
キルアオ
Other names 3
- Chinese
- 杀手青春
- Also known as
- คิลบลู
- Also known as
- Убивая юность
Overall score 7.2/10
Spring 2026#28 (#28 overall)Overall score The overall score is not a simple average but a weighted blend: (w_P·P + w_T·T + v·R) / (w_P + w_T + v)This title: Site scores P = 7.22 (weight 71, 77%); Fan sentiment T = 6.98 (weight 20.7, 23%); Community: No ratings yet (each rating counts as one vote); P: site consensus 7.23 (50.6K votes), shrunk toward the season baseline 6.97 by vote count to 7.22.P is the consensus of site scores (calibrated to one scale), T the sentiment of public comments, R our community's mean. Each part is weighted in “virtual votes”: more votes and comments mean more weight.See the breakdown · Scoring rules in detailSentiment 6.1 · 43% positiveChinese audience 7.0English audience 7.3
- Hot-Blooded#7 (#7 in Hot-Blooded, Spring 2026)
- Battle#11 (#11 in Battle, Spring 2026)
- School#13 (#13 in School, Spring 2026)
- 2026#92 (#92 in the 2026 ranking)
- Action
- Comedy
- #Guns
- #Age Regression
- #School
12 eps · Finished
CUEManga adaptationPremiered Apr 11, 202624 min per episodeOverview
Spoiler-free synopsis
大狼十三是一名无论多么困难的委托都能完成的传奇杀手。 某天，在捣毁某个组织后，十三被一只品种不明的蜂螫伤，失去了意识。 当他醒来时，发现自己竟然从39岁的成年人变成了13岁的小孩！ 震惊不已的十三紧接着又接到了首领的命令，要他以这副模样潜入国中！ 等待他的是与个性各异的同学们共度青春的校园生活—— 他还能恢复原样吗！？刺客正在逼近十三！
Chinese synopsis from Bangumi (opens in a new window)
Juuzou Oogami is a legendary hitman who has never failed an assignment, no matter how impossible. One day, after wiping out a powerful organization, he is stung by a mysterious wasp and collapses. When he wakes up, the fearsome 39-year-old assassin has been transformed into a 13-year-old boy! Before he can even process what happened, his boss delivers a new order: “In that body, infiltrate a middle school.” What awaits him is an unexpected school life filled with colorful classmates, youthful chaos, and looming danger. Can Juuzou ever return to his original form? Or will the assassins closing in on him end his second life before it even begins!?
Genres & tags
- Action
- Comedy
- #GunsRelevance 91%
- #Age RegressionRelevance 90%
- #SchoolRelevance 90%
- #AssassinsRelevance 88%
- #ShounenRelevance 83%
- #School ClubRelevance 79%
- #UrbanRelevance 79%
- #RehabilitationRelevance 72%
- #Surreal ComedyRelevance 72%
- #CrimeRelevance 70%
- #KuudereRelevance 70%
- #Primarily Child CastRelevance 64%
- #Criminal OrganizationRelevance 60%
- #Ensemble CastRelevance 60%
- #Male ProtagonistRelevance 60%
- #BullyingRelevance 40%
- #BarRelevance 20%
- #LGBTQ+ ThemesRelevance 13%
The percentage after a tag is its relevance to this title. 11 more tags that may contain spoilers are hidden; you can reveal them under Viewing notes.
Details
- Format
- TV · 12 episodes · 24 min per episode
- Status
- Finished
- Aired
- Apr 11, 2026 – Jun 27, 2026
- Studio
- CUE
- Source
- Manga adaptation
- Season
- Spring 2026
- Categories
- Hot-BloodedBattleSchoolComedyMale-Oriented
- Official site
- kill-blue.jp (opens in a new window)
Where to WatchOfficial platforms
Prices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsViewing regionYour saved choiceGuessed from your network location; change it anytimeNetwork location unavailable. Preselected from browser language; confirm your viewing region.Network location unavailable. Default shown; choose your viewing region.
Mainland China: no confirmed streaming page yet.
- PlexFree (with ads)
- Rakuten VikiFree (with ads)
- TubiFree (with ads)
- Amazon Prime VideoSubscription
- CrunchyrollSubscription
- NetflixSubscription
- It's Anime (YouTube, Remow)Access type unknown
- PlexFree (with ads)
- Rakuten VikiFree (with ads)
- TubiFree (with ads)
- Amazon Prime VideoSubscription
- CrunchyrollSubscription
- NetflixSubscription
- It's Anime (YouTube, Remow)Access type unknown
- Amazon Prime VideoSubscription
- HuluSubscription
- NetflixSubscription
- Amazon Prime VideoRent
- ABEMAAccess type unknown
- dアニメストアAccess type unknown
- NiconicoAccess type unknown
- U-NEXTAccess type unknown
- NetflixSubscription
- Ani-One (YouTube, Chinese)Access type unknown
- Bahamut Anime CrazyAccess type unknown
- NetflixSubscription
- Ani-One (YouTube, Chinese)Access type unknown
- Bahamut Anime CrazyAccess type unknown
- PlexFree (with ads)
- CrunchyrollSubscription
- NetflixSubscription
- Ani-One (YouTube, Chinese)Access type unknown
Sources: TMDB · JustWatch (source page, opens in a new window) · bangumi-data (source page, opens in a new window)
- PlexFree (with ads)
- TubiFree (with ads)
- Amazon Prime VideoSubscription
- CrunchyrollSubscription
- NetflixSubscription
- Amazon Prime VideoFree
- ADN (Animation Digital Network)Subscription
- CrunchyrollSubscription
- NetflixSubscription
- ADN (Animation Digital Network)Free (with ads)
- PlexFree (with ads)
- ADN (Animation Digital Network)Subscription
- Amazon Prime VideoSubscription
- CrunchyrollSubscription
- NetflixSubscription
Other regions & licensing details
- Canada
- Netflix (title page, opens in a new window)
- Crunchyroll (title page, opens in a new window)
- PlexPlatform homepage (platform homepage, opens in a new window)
- Amazon Prime Video (title page, opens in a new window)
- TubiPlatform homepage (platform homepage, opens in a new window)
- It's Anime (YouTube, Remow)Platform homepage (platform homepage, opens in a new window)
- Rakuten Viki (title page, opens in a new window)
- United States
- Netflix (title page, opens in a new window)
- Crunchyroll (title page, opens in a new window)
- PlexPlatform homepage (platform homepage, opens in a new window)
- Amazon Prime Video (title page, opens in a new window)
- TubiPlatform homepage (platform homepage, opens in a new window)
- It's Anime (YouTube, Remow)Platform homepage (platform homepage, opens in a new window)
- Rakuten Viki (title page, opens in a new window)
- Japan
- Netflix (title page, opens in a new window)
- Amazon Prime Video (title page, opens in a new window)
- ABEMA (title page, opens in a new window)
- Amazon Prime Video (title page, opens in a new window)
- dアニメストア (title page, opens in a new window)
- HuluPlatform homepage (platform homepage, opens in a new window)
- Niconico (title page, opens in a new window)
- U-NEXT (title page, opens in a new window)
- Taiwan
- Hong Kong
- Singapore
- Netflix (title page, opens in a new window)
- Crunchyroll (title page, opens in a new window)
- PlexPlatform homepage (platform homepage, opens in a new window)
- Ani-One (YouTube, Chinese) (title page, opens in a new window)
- Malaysia
- South Korea
- United Kingdom
- Australia
- Netflix (title page, opens in a new window)
- Crunchyroll (title page, opens in a new window)
- PlexPlatform homepage (platform homepage, opens in a new window)
- Amazon Prime Video (title page, opens in a new window)
- TubiPlatform homepage (platform homepage, opens in a new window)
- Germany
- France
- Netflix (title page, opens in a new window)
- Crunchyroll (title page, opens in a new window)
- PlexPlatform homepage (platform homepage, opens in a new window)
- Amazon Prime Video (title page, opens in a new window)
- ADN (Animation Digital Network)Platform homepage (platform homepage, opens in a new window)
- Spain
- Italy
- Mexico
- Brazil
- India
- Indonesia
- Philippines
- Thailand
- New Zealand
- Ireland
- Netherlands
- Belgium
- Austria
- Switzerland
- Sweden
- Norway
- Denmark
- Finland
- Portugal
- Poland
- Other regions
- NetflixAndorra, United Arab Emirates and more (87 regions) (title page, opens in a new window)
- CrunchyrollUnited Arab Emirates, Argentina and more (18 regions) (title page, opens in a new window)
- PlexPlatform homepageAndorra, Antigua & Barbuda and more (86 regions) (platform homepage, opens in a new window)
- Amazon Prime VideoAntigua & Barbuda, Argentina and more (50 regions) (title page, opens in a new window)
- Ani-One (YouTube, Chinese)Macao (title page, opens in a new window)
- Bahamut Anime CrazyMacao (title page, opens in a new window)
- Region not verifiedThese official pages are listed by bangumi-data or AniList, or reported by ANN news, but the source doesn't say in which regions they are available. Whether you can watch there, and at what price, is up to the platform's page.
LicensorsA company that holds the rights to this title, from the English Wikipedia infobox and Anime News Network (ANN) licensing news. A licensor is not a streaming platform (without a stated region it usually means the English-language release). The “→” after a distributor is its own streaming service.
Official, licensed options only; the platform's page is what counts. Every row cites its source · checked Sep 26, 2026
What people sayPublic comments from other sites
AI sentiment analysisAn AI model (qwen3:8b) rates each public comment as very positive / positive / mixed / negative / very negative (scored 9.5 / 8 / 6 / 4 / 2), averages them weighted by confidence, site, length, “helpful” votes and date, then shrinks the result toward a neutral 6 (so a few comments can't inflate it).Calibrated to the site-score scale it is 6.98, and it counts toward the overall score by the number of comments (at most 35%).Only the latest ~40 comments per site are read (plus ~50 posts from each forum's episode threads, which weigh less): a sample, not everything. Excerpts are at most 140 characters and belong to their authors; comments that may contain spoilers are not shown. Comments from Chinese sites appear in an AI translation, with the original one click away. Sentiment labels can be wrong. Updated Oct 7, 2026, 06:36.See the score breakdownSentiment score6.1/10
Positive43%
49 comments analyzed: Bangumi 40 · Kitsu 7 · AniList 2
English audience score 7.3 · 49,807 samples
PositiveAuthor's score 6.524 found this helpful
Simple, repetitive, and surprisingly heartfelt. Sometimes all you need is a fun story and loveable characters Kill Blue starts with a very…
Very negative1 found this helpful
A light comedy doesn't excuse narrative inconsistency. Plenty of absurdity, little to no comedy. Detective Conan meets Scott Pilgrim. 3/10
PositiveAuthor's score 7.016 found this helpful
A Pretty Chill, Funny, Low Stakes Shonen If you're looking for something that doesn't ask much of you, this is it. It's a genuinely chill,…
Negative1 found this helpful
it's rather underwhelming.
Positive4 found this helpful
Fun and cringy, but I enjoyed it. The OP & ED were really good too.
Mood & content
Source: Derived from community tagsConfidence: low (48%)Updated Sep 24, 2026
0 = barely any, 10 = very pronounced. Values measure how much, not how good, and different viewers feel the same show differently. “No data yet” means the item hasn't been assessed yet, not that it's absent.
Mood
- Light
- Exciting
- Heavy
Funny: high
Light
- RelaxingNo data yet. Easy to watch, low effort
- HealingNo data yet. Gentle and comforting
- Funny7.2 / 10, levelHigh. Density of laughs
- HeartwarmingNo data yet. Warmth from relationships
Exciting
- Hype5.5 / 10, levelModerate. Adrenaline and excitement
- Tense5.4 / 10, levelModerate. Suspense and tension
Heavy
- Oppressive3.4 / 10, levelLow. Heavy, stifling atmosphere
- Dark4.6 / 10, levelModerate. Darkness of setting and themes
- SadNo data yet. Share of sad moments
- BleakNo data yet. Likelihood of a lingering low mood
Emotional intensityNo data yet. How strongly it moves you, either way
Emotional intensity measures how strong the ups and downs are, happy or sad.
Content
Higher = more of itThemes
Action6.5
High (6.5 / 10). Share of fights and action
Romance
No data yet. Weight of romance plotlines
Slice of life
No data yet. Share of everyday-life episodes
Harem
No data yet. Harem dynamics around the lead
Sensitive content· may be upsetting; judge by your own comfort level
Violence6.5
High (6.5 / 10). Intensity of violence
Psychological stress3.5
Low (3.5 / 10). Mental torment and anxiety
Fan service
No data yet. Suggestive shots and fan service
Gore
No data yet. Blood and graphic injury
Character death
No data yet. Likelihood of major character deaths
Horror
No data yet. Scares and horror
Betrayal
No data yet. Betrayal plotlines
Heartbreak
No data yet. Deliberately heart-wrenching arcs
Style
Complexity4.9
(0 = Easy to follow, 10 = Mind-bending). Plot complexity and densityPacing6.0
(0 = Slow burn, 10 = Fast-paced). 0 = slow burn, 10 = fast-pacedWorld-buildingNo data yet
(0 = Simple, 10 = Vast and deep). Depth of the setting
Viewing notes
Spoiler-free by defaultNo spoiler-free viewing notes yet.
Ratings
Updated Oct 7, 2026, 06:36About scores
Overall score The overall score is not a simple average but a weighted blend:
(w_P·P + w_T·T + v·R) / (w_P + w_T + v)This title: Site scores P = 7.22 (weight 71, 77%); Fan sentiment T = 6.98 (weight 20.7, 23%); Community: No ratings yet (each rating counts as one vote); P: site consensus 7.23 (50.6K votes), shrunk toward the season baseline 6.97 by vote count to 7.22.P is the consensus of site scores (calibrated to one scale), T the sentiment of public comments, R our community's mean. Each part is weighted in “virtual votes”: more votes and comments mean more weight.See the breakdown · Scoring rules in detailOverall score 7.2/10
Score breakdownThe three parts are weighted in “virtual votes”: the more site votes and analyzed comments, the more weight that part gets. Fan sentiment is capped at 35%, and each AniRanking rating counts as one vote. Full rules
- Site scores7.2277%Consensus of 50.6K site votes (calibrated to one scale and shrunk toward the global baseline by vote count)
- Fan sentiment6.9823%49 comments, average 5.93 (the sentiment score shown, 6.1, is also shrunk toward neutral), calibrated against comparable titles to 6.98
- CommunityNot counted0%No ratings yet (each rating counts as one vote)
Site scoresThe site consensus is 7.23 (50,622 votes, weighted by site reliability × log of votes); shrunk toward the season baseline 6.97 by vote count, it becomes 7.22. Sites score differently (Bangumi runs low, bilibili high), so each is first calibrated to one scale using titles rated on both it and AniList, then combined; sites with fewer than 100 votes are ignored.
Raw → calibrated to one scale| Site | Raw score | Votes | Calibrated |
|---|---|---|---|
| AniList (external link, opens in a new window)Reference site | 74/100 | 10.4K votes | 7.4 |
| MyAnimeList (external link, opens in a new window)Calibrated to the AniList scale | 7.3/10 | 39.4K votes | 7.2 |
| Bangumi (external link, opens in a new window)Calibrated to the AniList scale | 6.0/10 | 824 votes | 7.1 |
| bilibiliNo data | — | — | Not counted |
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