Lol, this seems silly, but I do this with Genshin Impact. T_T I like to go to the places where the characters normally stay and then sort of pretend like they're doing stuff. I also like going to the teapot (home builder game mode) and then giving the characters rooms with stuff I think they would like, or setting them up like Barbies or whatever.

One time, I spent like a whole day roleplaying as Itto bc a random Ayato joined my world, and we were goofing off at this one spot that lets you put one of the characters in jail. It was funny!