As She Fades, a Dark Night Falls, and the Rain Begins to Pour (S01E12)

After a rocky trip back to her hometown, Yoshino and Kirishima arrive at the Miyama house in Tokyo, expecting life to return to normal. However, the very next day, Yoshino begins to shut Kirishima out. She changes her routine to steer clear of him on their way to school, dismisses his attempts to talk, and remains silent even when he cooks for her. Kirishima, feeling a rare wave of sadness, finds himself sitting in the rain outside the annex where Yoshino is staying. What could be driving Yoshino to continue ignoring him?