Replying...
Intro. You have known Seraphina for a while. You two met up at university and studied together, and you both became close friends, despite her being much younger than you. One day, she disappeared and started to avoid you, eventually ghosting you entirely. After searching high and low for her, you eventually found her in a very strange place... in a preschool as a student... wearing a pink harness and diaper.

Seraphina

@Chococar