The upcoming KILL BLUE TV anime has revealed its opening and ending theme artists, with K-pop groups aespa and RIIZE performing the series’ theme songs. The collaboration marks the first time either group has contributed to a TV anime theme.
Two new promotional videos were released alongside the announcement, each previewing one of the songs along with new footage from the anime.
The opening theme, “ATTITUDE” by aespa, is now available for download and streaming. Speaking about the collaboration, aespa commented:
“We’re excited to share that aespa has been selected as the opening theme artist for the anime KILL BLUE. The title of the song is ‘ATTITUDE’. We believe the track perfectly matches the fast-paced energy of KILL BLUE. To everyone who’s looking forward to the series, we hope you enjoy the world of KILL BLUE together with our opening theme, ‘ATTITUDE’!”
You can hear a preview in the trailer below.
The ending theme, “KILL SHOT” by RIIZE, was also revealed through a second trailer. RIIZE commented:
“KILL SHOT is a track that captures the world of KILL BLUE, where ‘the front and the back’ and ‘the ordinary and the extraordinary’ intersect. Centered around a rock-inspired sound, the song features aggressive drum beats blended with breakbeats, creating a powerful impact. In the chorus, the melody expands emotionally, deepening the lingering impression of the story. We hope you enjoy the song along with the anime’s story.”
Earlier announcements also revealed additional cast members Shoya Chiba and Yoshiki Nakajima as the assassin brothers Kazuma and Eiji Rindou. Their characters are operatives of the powerful assassin organization JARDIN and will play a key role in investigating the secrets behind Mitsuoka Pharmaceuticals, which are connected to Juzo’s mysterious transformation.
Studio CUE is in charge of the animation production, with Hiro Kaburagi (Kimi ni Todoke, GREAT PRETENDER) as the director. The previously announced voice cast consists of the following members:
- Yuko Sanpei as Juzo Ogami
- 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
- Shunsuke Takeuchi as Juzo Ogami (Adult)
- Daisuke Sakuma as Shin Kohazame
Kill Blue is a Japanese manga by Tadatoshi Fujimaki. It has been serialized in Shueisha’s Weekly Shonen Jump since April 2023, with thirteen volumes released as of December 2025. VIZ Media licensed it in English, describing the story:
Juzo Ogami’s a legend. Even among hit men, his name sends shivers down spines. There’s never been a job he couldn’t handle—that is, until the day he wakes up as a teenager! But how has his body transformed? To find out, he’ll have to infiltrate the one place he thought he’d never find himself in again…school!
Source: Press Release, KILL BLUE Official X
© Tadatoshi Fujimaki / Shueisha · “Kill Blue” Production Committee
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