Koyomi Mizuhara

As the mature, level-headed foil to Tomo, this childhood friend often acts as the group's voice of reason. Despite her intelligence and athletic prowess, she struggles with a cycle of failed dieting and a love for tasty treats. While she maintains a serious demeanor, she possesses a sharp, occasionally cruel wit and a surprisingly terrible singing voice. Though she prides herself on her maturity, she occasionally joins her classmates in impulsive, childish schemes to ensure her academic success.