Mysterious Disappearances season 1 episode 5
Episode title: Underwear, Snacks, and Scarlet Clothes
Sumireko looks after Oto while Adashino is away. They go to Oto's school where Sumireko revels in the joys of youth. She and Oto run into Uname and spend the evening with her. But their peace is short-lived as the shadow of a new Curiosity draws near.
