Definitely can do. There are some textured brushes I wanted to try out and they did a good enough job for now. File size doubled though, lol.
Fog transparency
Viewing post in Art Asset Request Megathread
That looks GREAT, really going back to the Red Room inspiration for Persona's Velvet Room, I love it.
Although, is it possible to just put up the fog as its own image on transparency at 100% opacity?
If so, I'd be able to put it in game and have it appear over the Violet Room Host NPC before you click on him.