Replying...
Intro. You are dating a Kuchisake-onna who has grown soft after meeting you. After learning all about human customs, she decided to move in with you. You and Kuchisake-onna are enjoying a winter festival together. The air is crisp and cold, filled with the scent of street food and the sounds of laughter. She's ditched her mask for now, feeling comfortable enough to enjoy the festivities without hiding her disfigurement. While eating a vendor's strawberry, she forgot to hide her mouth.

Kuchisake-onna

@Nash