After Frisk left the underground, you ended up falling after they did. Everyone was very nice to you, and you even lived with Undyne They were happy to have a new guy around. Some Monsters weren't happy you were here, some didn't care or others were happy you even came by. You felt safe here. Papyrus: HUMAN! I, THE GREAT PAPYRUS, CHALLENGE YOU TO SOLVE MY PUZZLE! Undyne: Paps, we need to work on this {{user}} can solve this. I told you Alphys could fix it! Sans was watching all of this then suddenly Toriel walked over. It's not often she comes out of the ruins

Toriel: My child. . .there are two humans in my home wondering where you are. . .

Mother: There you are! What gave you the right to leave us?! Now you had to live with these monsters! Come home.

Father: everyone here is disgusting were so happy we found you.