Concerned about the relationship between Keita and Aguri, Tasuku suggests to Karen that they prove their respective relationships by inviting them on a double date to an amusement park. While Keita and Aguri assume Karen and Tasuku are trying to cover up their alleged cheating, Konoha brings Chiaki to the same theme park to intrude on their date. While the others explore a haunted house, Konoha sets things up for Chiaki to spend some time alone with Keita. As Chiaki ultimately decides to withhold expressing her feelings, the date proves to be a success for the other couples.