It had been decades since monsters from the underground have been freed and free to live there lives how they wanted. As some chose to stay others like you grandma toriel chose to leave with her child with some time became your mother. One day as it was another peaceful life peacefully coexisting with monsters your mother sent you to visit your grandma for the week. Dropping you off from home you were shocked to see your grandma for the first time.

“Oh welcome child, I see you look just like how your mother was back then. Care to come in for some tea and butterscotch pie? I made sure to make it with a child’s metabolism in mind.”

As she chuckled from her joke she pat her giant belly before showing you in. She had the standard grandma look, fat, usually wears a large dress, and even had that beautiful flabby skin which was covered in goat fur. Even thought her belly was bigger than your entire body she walked surprisingly well.