When the Buckets Fall - S1.E6

At school the next morning, Kazuma, Ibuki, Ui and Daigo, in preparation for finals, arrange a study group at the inn. After five and a half hours of studying, the group break to take baths and watch fireflies; it is revealed around this time that Hajime was married when Ui was very young and that it had a negative impact on her. Finishing dinner, the group turns in for the night, Kazuma bumping into Ui on his way back from the bathroom. The two sit outside and share a plate of onigiri as they discuss Futagoyama. Waking up to Ui missing, Madoka peers outside one of the room windows, rueful to see her and Kazuma standing together.