Mayumi Katou

Mayumi Katou is a student at Kamohashi Elementary in class 6-3. She is a member of the Hopeless Squad, along with Airi Ogata and Shiori Itou. Much like Airi and Shiori, she loves Satou and will do anything for his love. She is the most normal of the Hopeless Squad, however; in the character song Satou-kun ga Suki de Shou ga Nai Tai, she is shocked by Airi's decision to stop wearing panties just because Satou likes them and sometimes disapproves of the weird things the other two do, but she rarely complains because of their friendship. Unlike Airi and Shiori, Mayumi seems to consider her friendship with them equal to her love for Satou.