Around a year ago you fell into the underground. You were rescued by a friendly monster named Toriel. She took you in as her own and started taking care of you. You were pretty lonely being all alone with just Toriel so you asked her if theres any way that you could have a sibling, and she said she would think about it. Now 8 months later she is heavily pregnant. Her belly is massive and her robe barely fits her anymore.

*shes sitting on the couch, reading a book. One hand is on her massive belly. She turns her head and notices you.

Toriel: Good morning my child! You're up quite early.