Kill Blue: Release Date, Plot, and Everything We Know

Kill Blue anime premieres soon! here is everything you need to know about its release date, cast, plot, trailer and where to watch this unique story.

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There is already a lot of exciting anime on offer this Spring 2026, yet Kill Blue quickly distinguishes itself not only because it does not follow the usual shonen formula, but actually turns it upside down. A dangerous assassin transformed into a middle schooler? This idea alone makes it clear that this will not be your average action series.

With the recent announcement of an official premiere date and the confirmation of a worldwide release, Kill Blue is becoming one of the most notable experimental anime series of the year. With its crazy storyline, strong characters, and release strategy, here is everything you need to know about it before it hits the market.

Kill Blue Release Date

Kill Blue is officially releasing on April 11, 2026, at 11 PM via TV Tokyo and its affiliates within Japan (via the series’ official website). Meanwhile, the Japanese streaming will start from 11:30 PM on various Japanese streaming platforms like ABEMA, Amazon Prime Video, and so on.

For those of us living outside Japan, the episodes will be released on various platforms worldwide very shortly after the Japanese release. Streaming sites such as Crunchyroll are expected to upload episodes approximately 1 hour after the original Japanese TV broadcast.

Below are the estimated global release dates and times for Kill Blue.

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Due to differences in daylight saving time, the release time will vary for different regions in the United States.

Kill Blue Cast Details

The anime is bringing in some well-known voice cast for the important roles. According to the official website, leading the lineup is Shunsuke Takeuchi, who voices the adult version of Juuzou Oogami, while Yuko Sanpei handles his younger form.

Other main characters include –

• Fuka Izumi as Noren Mitsuoka
• Shuichiro Umeda as Kotatsu Nekota
• Takeo Otsuka as Tenma Tendo
• Atsumi Tanezaki as Chisato Shiraishi
• Yumi Uchiyama as Eri Wanibuchi
• Daisuke Sakuma as Shin Kohazame
• Shoya Chiba as Kazuma Rindou
• Yoshiki Nakajima as Eiji Rindou

The anime is directed by Yasunori Ide, animation is primarily done by Studio CUE, and music is composed by Ryo Konishi. Interestingly, ‘the theme songs also stand out – The opening track “ATTITUDE” is performed by aespa, while the ending “KILL SHOT” is by RIIZE – bringing a strong K-pop crossover appeal.

Spoiler Alert !!!This section contains some spoilers from Kill Blue story preview and teasers.

Kill Blue Plot Details

Kill Blue offers an interesting premise in shonen anime. According to the story preview via the official website, the main character, Juuzou Oogami, is one of the most successful hitmen of all time, with a 100% success rate. However, his life takes an unexpected twist when he gets stung by a strange wasp during a job, triggering a weird reaction that transforms his body into that of a child.

And just shortly after that incident, he receives his next assignment, which is completely unexpected – to infiltrate a middle school. This leads to many funny moments in which Juuzou’s assassin instincts and skills collide with everyday school activities. As Oogami attempts to piece together what has happened to him, he is faced with the difficulties of completing his schoolwork, developing friendships, and dealing with deadly threats from his past.

So the series is basically a blend of action, comedy, and character-driven storytelling – something that sets it apart from typical battle-heavy anime.

Kill Blue Trailer

The trailer does a great job setting the tone for the entire series. In a matter of seconds, we see Oogami shift from thrilling action sequences to hilarious moments at school, underscoring how ridiculous it is for him to be in a child’s body.

We also see that his assassin abilities remain, despite his younger body. The animation style provides fantastic expressive character reactions that match the show’s humor perfectly.

Where to Watch Kill Blue

The anime will be available on multiple major streaming platforms, including Netflix, Crunchyroll, and Amazon Prime Video, alongside several other regional services (via @KillBlue_en on Twitter/X). Crunchyroll, in particular, is the best platform to watch the series, as it releases episodes shortly after the Japanese television broadcast, providing international viewers with very timely access.

Kill Blue is not trying to be your typical action anime – and that is exactly why it might end up being one of the most memorable releases of 2026. If the anime can maintain the same balance of comedy and action, it could become a sleeper hit in the upcoming season.

When will Kill Blue anime release?

It premieres on April 11, 2026, in Japan, with global streaming starting shortly after.

What is Kill Blue about?

It follows a legendary assassin who turns into a child and must attend middle school while dealing with his past enemies.

Where can I watch Kill Blue?

You can stream it on Crunchyroll, Netflix and Amazon Prime Video.

Are you excited to see the Kill Blue anime when it’s released in your region? Share your thoughts in the comments section below.

Kill Blue will be available to watch on Crunchyroll from April 11, 2026.

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