KILL BLUE, the hit manga series from Weekly Shonen Jump by Kuroko’s Basketball creator Tadatoshi Fujimaki, continues to build momentum ahead of its highly anticipated anime adaptation with the announcement that Daisuke Sakuma has joined the cast as Shin Kohazame, a pink-haired assassin affiliated with the Chinese organization Yugang. The casting news is accompanied by newly released behind-the-scenes recording photos, a new visual, and a comment from Sakuma, offering fans a first look at his take on the character ahead of the series’ April 2026 premiere.
Shin Kohazame is assigned to go after Noren Mitsuoka at a middle school, where he finds himself navigating school life alongside the series’ protagonist, legendary hitman Jūzō Ōgami. Known for his pink hair, pacifier, and anxious demeanor when separated from it, Shin adds both danger and comedy to the series’ unique “assassins-in-school” setup.
Sakuma, a devoted anime fan and Japanese idol best known as a member of Snow Man, who has also appeared in series including Black Clover, shared his enthusiasm for joining the project:
“I’m Daisuke Sakuma, and I’ll be voicing Shin Kohazame. I’ve been reading KILL BLUE since it was serialized in Weekly Shonen Jump, and even back then, my favorite character was Shin Kohazame. So from the audition, I was determined to land this role. I’m truly thrilled that I was fortunate enough to be chosen to play Shin.
Shin is cool, but also a little strange. He’s serious, but also a little strange. I’m going to pour my heart so I can fully capture those sides of him. Thank you, and I look forward to your support.”
Set to be one of the most unique action shonen titles of 2026, KILL BLUE blends action and offbeat humor for a “second chance at youth” premise that sets it apart from the pack. The series follows a legendary 39-year-old hitman who is transformed into a 13-year-old boy and sent undercover to a middle school, where an attempt at a normal school life quickly spirals into danger.
SYNOPSIS
A legendary assassin at 39. Starting over… as a middle schooler.
Jūzō Ōgami 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 Jūzō ever return to his original form? Or will the assassins closing in on him end his second life before it even begins?
Animation Production: CUE
Voice Cast
Jūzō Ōgami: Yuko Sanpei
Noren Mitsuoka: Fuka Izumi
Kotatsu Nekota: Shuichiro Umeda
Shin Kohazame: Daisuke Sakuma
Tenma Tendo: Takeo Otsuka
Chisato Shiraishi: Atsumi Tanezaki
Eri Wanibuchi: Yumi Uchiyama
Jūzō Ōgami (Adult): Shunsuke Takeuchi
Official Website: https://kill-blue.us/
X (English): https://x.com/killblue_en
X (Japanese): https://x.com/KILLBLUE_PR
TikTok: https://www.tiktok.com/@killblue_official
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