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.

Shimamura just happens to run into Adachi's mom at the gym and they have an awkward encounter. Later on, Shimamura invites Adachi to karaoke with Hino and Nagafuji.

Adachi tries to ask Shimamura if she'd like to hang out on Christmas, but has a very hard time getting the words out. Meanwhile, Shimamura wonders why Adachi's been acting so weird lately.