Kayo Maruta

As the former vice-president of the Aihara Academy student council, this disciplined brunette was once known for strictly enforcing rules and even reprimanding newcomers like Yuzu. Though she typically maintains a formal tone with others, she shares a unique, casual bond with her best friend, Mitsuko. While she initially appears rigid, her personality softens significantly alongside her close-knit group of friends, revealing a much warmer side during their summer travels.