Mysterious Disappearances

The curse of Tsukuyomi's Water of Youth hasn't finished with Sumireko yet. Meanwhile, Adashino's younger sister, Oto, picks up on the presence of a Curiosity at the school she attends. Sumireko poses as Oto's friend in order to infiltrate the school.

The cuckoo known as Adashino cries in the deserted Midori Bookshop once more. Sumireko intends to spend her day off writing. As she's admiring the sakura outside her window, she gets a text from Adashino asking her to look after Oto for two or three days.

Shizuku is looking for Tomoko, who disappeared on a rainy night a year ago. Based on Tomoko's final video call, Adashino has a guess about the Curiosity, but he has a few concerns. Oto wants to help Shizuku, so she begins her own search.