Hirayasumi: 1x4

Episode 4

Returning from work, Hiroto runs into Natsumi at Asagaya Station. The latter has been skipping class due to her lack of friends and was wandering around town. Natsumi questions why Hiroto always seems so worry-free and his answer surprises her. Upon resuming class, she reunites with Akari Yokoyama, the girl who gave her water when she was drunk.