Retsu Igarashi

He is one of the most popular boys in school. He is also known as a playboy but puts Ai as his first priority. After Yamato slapped him, he developed a crush for Yamato. His lover relationship with Ai is fake as he wants to protect her from being bullied.He often gets annoyed with Yamato when she spends too much time around Manabe. Yamato is, however, unaware of his affections at the beginning. Ai had noticed his crush on Yamato, and after she and Yamato make up, she "breaks up" with him.