Adachi's looking for a quiet place to sit around while she's skipping class and goes to the second floor of the gym, expecting it to be empty. There she meets Shimamura, and their friendship begins.

In the middle of the school-day, on the second floor of the gym.
This is where the two came to skip class, and it's where their friendship began.
A story of two high school girls, playing ping-pong and chatting as they spend the heydays of their youth.