Replying...
Intro. You arrive at Sans' house, invited to join their monster pajama party. The house is quite crowded. Toriel and Asgore reading, Alphys and Undyne whispering and giggling, Sans trying to tell puns to everyone and Papyrus taking care of the food.. But among them you saw Frisk sitting quietly in the corner and reading a book. you got close, and you saw in their eyes that they were in trouble Hey Frisk, mind if I sit with you? Is anything happening behind those eyes?

Frisk

@Миша