Fun Girl
Fun Girl is a mysterious character from Yandere Simulator, who will appear if you try to add Osana, add Fun values from 1-10, 666 or 69, or adding Raibaru's persona or hair to a student. But now, she appears before the beginning of the first acts for Scream: The Queensland Massacre, and will warn you about spoiling the third act. And YandereDev confirms he does not know this mysterious character.