Manaka is a supporting character who first appears in the third season of the anime. She is a pale turquoise‑furred cat‑like animal with large light brown eyes, three whiskers on each cheek, and a long thin tail. She works as a store clerk and serves as the lead singer and guitarist of the idol group OTMGirls, a role that places her in direct collaboration with Retsuko when the latter joins the group. Manaka initially comes across as impertinent, arrogant, and impatient, particularly in her early interactions with Retsuko, whom she treats with a demanding and dismissive attitude. Beneath this surface, however, she is highly dedicated to her idol career and is not afraid to work hard to achieve her goals. As the story progresses, her relationship with Retsuko develops beyond mere professional necessity: she gradually becomes more appreciative of Retsuko’s efforts and sincerity, and the two grow into genuine friends who occasionally share personal struggles and offer each other advice. This personal growth shows a softer, more caring side beneath her diva‑like exterior. Manaka’s motivations are centered on her ambition as a performer, and she displays a confident, brash personality that contrasts sharply with Retsuko’s usual passivity. She continues to appear as a supporting figure in the fourth and fifth seasons, maintaining her role within OTMGirls and her friendship with Retsuko. Her notable abilities include her vocal and musical talents, which drive her idol career, as well as a resilient work ethic that allows her to balance multiple jobs and responsibilities.