Dance no ato de (E11)

A ball is held once a year at the school. Students and their parents in formal dresses and attires start to gather in the cafeteria where the ball is about to begin. Saya appears in a dress that she borrowed from Min. Saya meets a young man by the name of Solomon. He asks Saya to dance with him. While they dance David finally reaches the entrance to the basement hidden by the blue rose bushes. (Prime Video)