Makoto Yoshizawa summons Rena to a hotel and presses her for an adult relationship in exchange for money. At school, a video posted on social media by students in Class 3-C becomes a huge problem, and Rio and the other teachers are busy apologizing.

Rio’s father, Hideki, is featured on TV as the CEO of a company that is doing well, and Rio’s students are very excited to see the program. Meanwhile, Rena begins to feel uneasy when she realizes that the person she served at the snack bar was Hideki.

She runs out of Seiya’s room and meets up with her sister Seri and her father. Just before that, Rio sees a woman who looks exactly like her student Rena Sawaiya, but she lets it pass. The next day, a famous complainer called Yuzo Izumi appears at the school.

Kaede, who is suspicious of Chiyomi Horikiri, who is talking to someone in a room where there should be no one and calling out to that “someone” as “Minami,” resolves herself and enters the room! When Kaede asks “Is there a tiny Minami here?”, Chiyomi replies “There is”, and shows her a tiny Minami doll that she made in the handicrafts club. Chiyomi managed to get through by desperately covering up, but she doesn’t know if she was able to dispel Kaede’s, Yuriko’s, and Shintaro’s suspicions, and she also feels embarrassed about performing a one-woman play with a doll. At the time, Kaede, Yuriko and Shintaro were holding a strategy meeting about “Chiyomi talking to Minami’s doll by herself.” As they talked about their own youthful experiences with dolls, they came to the conclusion that they should stop thinking of Chiyomi as someone who was in pain.