KILL BLUE Anime Adds Ikumi Hasegawa to Cast

A new cast member has been unveiled for the KILL BLUE anime, which currently adapts Tadatoshi Fujimaki’s manga as part of the spring 2026 season. Ikumi Hasegawa voices Mermaid Queen Mai Otohime, a marine sports master with two distinct sides to her personality. Ikumi Hasegawa had the following to say about the role: “She's a marine sports prodigy. I grew up in a landlocked prefecture and have never tried marine sports myself, but earlier this year I felt strangely drawn to go see the ocean by myself one day. Maybe Otohime was calling out to me… or maybe I was just exhausted. Otohime is a girl ...

There’s also a new slice-of-life visual for the ongoing series