It's the second spring after the climactic scene involving Hideki and Chi, and they're going to announce whether Hideki gets to go to college. Ms. Hibiya is cleaning. Kotoko is hanging out awaiting Hideki's results as well.
She recaps what's been going on in the final third of the series with an emphasis on the final five minutes of the final episode in the series.
At the end of the episode, everyone meets at the train station to greet Hideki and Chi.