The staff of the TV anime adaptation of Tadatoshi Fujimaki’s KILL BLUE manga series has announced the cast members for assassin brothers duo Kazuma and Eiji Rindou. Shoya Chiba voices Kazuma Rindou in KILL BLUE, while Yoshiki Nakajima voices Eiji Rindou. The cast members also shared comments regarding their roles in the anime.
Shoya Chiba (Kazuma Rindou)
“Each and every character feels so lively, and I found myself completely drawn in by the dialogue, which is over-the-top yet still feels genuine! I also love how characters who seemed a bit low-profile at first gradually grow closer over time. There are heartwarming moments throughout, and I even found myself laughing out loud at the jokes. I’m truly happy to be a part of this.
At the same time, as a skilled assassin who reminds Ōgami of his true profession, I want to make sure I can also portray the serious side of the story. His way of speaking is quite distinctive, and I’d like to bring the quirky Kazuma to life in a fun way.”
Yoshiki Nakajima (Eiji Rindou)
“I’m Yoshiki Nakajima, and I’ll be voicing Eiji Rindou.
Personally, I’m not sure I’d want to go back to being a middle schooler, but watching Jūzō enjoy his student life makes me feel just a little bit envious.
The Rindou brothers appear as enemies standing in Jūzō’s way! What kind of fighting style will Eiji use, and what kinds of lines will he deliver…? I’m already looking forward to the recording sessions!
Thank you for your support!”
The KILL BLUE anime premieres in April 2026 on TV Tokyo and affiliate channels.
The cast of the anime includes:
- Shinsuke Takeuchi as protagonist Juzo Ogami in his adult form
- Yūko Sanpei as Juzo Ogami in his kid form
- Fūka Izumi as Noren Mitsuoka
- Shūichirō Umeda as Kotatsu Nekota
- Takeo Ōtsuka as Tenma Tendo
- Atsumi Tanezaki as Chisato Shiraishi
- Yumi Uchiyama as Eri Wanibuchi
- Daisuke Sakuma as Shin Kohazame
Hiro Kaburagi is the director of the KILL BLUE anime. What’s more, Miho Daidōji is the character designer, and CUE is producing the animation.
The KILL BLUE manga received a new novel adaptation, titled Kill Ao Secret Report (Kill Blue Secret Report), by Kiyoko Hoshi. The novel shipped on December 4, 2025 alongside the manga’s 13th and final compiled book volume. Shueisha serialized the KILL BLUE manga in Weekly Shonen Jump.
Lastly, here’s an overview of the series, via Shueisha:
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!?
