After visiting the graves several years later, Koji met up with his aunt's sister at the station on the way back, and they decided to take a break and tour the town where they had lived together in their childhood with his aunt, Akari. Akari, who had reunited after a long time, had transformed into a mature woman with a voluptuous figure, quite different from before. Koji, still a virgin and lacking immunity to women as a working adult, couldn't help but get excited and entertain improper thoughts. As they finished touring the town and were about to head back, a sudden rain began, causing the trains to be suspended, and as a result, they ended up staying overnight at a hotel together.
