Suzu Sakuma

This teen model, Satoshi's cousin, quickly developed a strong affection for Yuu after seeing his photo, which inspired her to participate in a cosmetic commercial featuring him. Through Satoshi's influence, Yuu also became her math tutor. Despite her attempts to communicate her feelings, Yuu viewed her only as a younger sister. Her complicated relationships include an intense, though ultimately unrequited, pursuit of Yuu, a conflict with Miki over perceived infidelity, and a complex dynamic with Kei.