1x3 - Say "I Love You."

Yamato tags along as Mei intends to visit the parlor to have her hair cut, eventually becoming a date. On the way they meet Aiko Muto, along with her boyfriend Masashi Tachikawa, and eventually invites the two to a bowling alley. Aiko, who has a crush on Yamato after finding out her ex-boyfriend cheated on her, wonders what did he see in Mei, who looks not interested in him. When the two girls are alone Aiko bluffs Mei into leaving him alone, but it was in vain as Yamato followed Mei on the way out. Yamato momentarily loses Mei, but knew where to find her. Eventually he shows Mei his middle school, where he sheds light on his past, about not caring about anybody else as a middle schooler, even with his best friend who was being bullied. He says it's him who is having a hard time blending with others. For this Mei, who herself needs to trust others, tells him to trust others, else he will lose friends.