Makoto Yuki is a student at Suzaku Academy and a former student of teacher Sayaka Nanjo. He grew up with Sayaka in a sibling-like relationship, which later developed into a forbidden romantic involvement during her previous teaching position. This scandal forced Sayaka to transfer to a new school, but Makoto continues to attend the same academy. He is characterized by his lingering attraction to Sayaka, often watching her with longing eyes. His primary motivation is to reconnect with her and revisit their past relationship. In the story, he serves as the catalyst for the central conflict, representing the unresolved emotional history that Sayaka tries to conceal. His relationship with Sayaka is the defining element of his role, and he does not exhibit any special abilities or undergo significant personal growth over the course of the series.