Adachi and Shimamura happened to meet each other on the second floor of the gymnasium as they were skipping class. Eventually, they started seeing each other more and started playing ping-pong together.

Shimamura meets a little astronaut named Yashiro. Shimamura and Adachi also decide to attend class for once and Adachi starts questioning how she actually feels about Shimamura.

Shimamura worries about Adachi when she doesn't come to school the next day after she abruptly left her house. The two girls go out together on the weekend and an unlikely guest joins them.