Koyoi Takase, born on November 23 with blood type A, is a character who appears in the anime film King of Prism -Your Endless Call- Miinna Kirameki! Prism☆Tours. He is the leader of the idol unit WITH, which also includes Shogo Yumekawa and Asahi Mitaka. Koyoi presents a cool and calm personality, consistently showing gentleness toward everyone he meets. His relaxed disposition is so natural that it is hard to picture him ever growing angry. He also possesses a playful side, taking particular delight in teasing and embarrassing his unit mate Shogo, a dynamic that adds a lighthearted edge to his otherwise unshakable composure. Although his deeper personal motivations are not extensively detailed in the film, as the leader of WITH he is dedicated to pursuing the brilliance of prism shows and guiding his group through the competitive idol world. His relationships center on his unit members, with the teasing yet supportive interaction with Shogo being most prominent, while his connection with Asahi remains less defined. No explicit character development arc is presented for Koyoi in this movie, as he appears as a fully established, steady presence from the outset. As a prism star, he possesses the essential ability to perform prism shows, though specific signature jumps or unique performance techniques are not recorded for him. Overall, Koyoi Takase functions as a mature, easygoing leader whose calm demeanor provides a stable foundation for his unit.