Sana, Nanaka and Aoi are depressed because of Shuri and Shusuke leaving, and decide to go to the river to take their minds of it. However, Aoi fakes being ill to allow Sana and Nanaka to be together. After a failed attempt at fishing, Sana takes Nanaka to a cave that he and Shusuke considered their secret hideaway. After it starts to rain outside, the two stay in the cave, where Sana asks Nanaka why she did not send the notes in the mailbox directly to Sana...