Summary: Deciding that they need to help with Sana and Nanaka’s relationship, the Wakatsuki twins suggest a trip for their entire group to Kotsuchi-kawa.

Summary: After dreaming of his ideal Nanaka, Sana wakes up one morning and heads for school, meeting up with Aoi outside his apartment.

Summary: Sleeping peacefully on the train to Sakuranomori, 16-year-old Hidaka Sana dreams of the farewell party held for him five years ago as his family was about to relocate to Tokyo.