Maki starts talking to Yu at school, and in the course of their conversation, she invites Kai and Yu to her house. Seeing Maki and Yu spending time together like friends in the house where she and Maki usually played together, Kai shows a complicated expression. On another day, Kai and Maki play at Maki's house as usual, but they become so engrossed in reading manga that they fall asleep. Maki's mother, Masaki, comes home late at night and notices, and although she scolds Kai, he stays the night. Meanwhile, at school, they begin deciding on the organizing committee for the school festival.

Kai expresses his complex feelings towards Yu. He talks about the first time he spoke to Yu when she transferred schools in third grade, how they became closer and closer after that, how he was only seen as "Yu's best friend" by those around him, and how he was ostracized by friends who were jealous of his position... Yu is shocked to hear about Kai's feelings for the first time. Meanwhile, Maki, who wants Kai and Yu to return to their former relationship, wants Kai to prioritize spending time with Yu over spending time with her.