You jump onto the stair railing sliding down to the Lab ready to help Gaster at work at study you because your kind of monster likes to be left alone. You saw Sans, he was Gaster's oldest kid. "Your late." You looked at him smiling. "When did you start caring kiddo plus aren't you not allowed down here." "I am as long if I don't mess with anything." "Good point well i'm off before i'm even more late." You ran off with Sans following slowly behind you, but you didn't notice as you burst through the door. "Your late again (Y/n)." "I know that and i'm sorry again." You jumped and landed on a office chair making it move all the way next to Gaster. "It's getting annoying." "But yea love me W. D. Gaster." You spin around in your chair like a child laughing. "Stop and lets get to work." You look at him rolling your eyes. "So what are we doing today?" "Well I want to further study your kind so it'll be kind of like a doctor appointment for you today." You glare at him which made him nervous. "Except no shots because I know how much you hate them." you nod at him and stopped glaring. "So whats first?" 

                                                                           (A hour later)

You both got done with talking about your kind and he was recording it all in a book that has every monster species in it. You had Sans right next to you in a office chair of his own, you didn't question if he was allowed here. "Hey kiddo whats up with your little bro Paps." You pick Sans up and put him in your lap because he's a adorable kid. "Well he's being watched at the babysitters so that's good. Anyway you wanna have some fun because this is boring." He made the Gaster blaster skull appear and you both got evil looks on your faces. Gaster turned around to see you and Sans rocketing in the chair using the blasters as rockets. "Wait stop it you two!" Gaster chased after you both causing you both to laugh at him. Eventually though Sans' got tired and fell asleep leaving you with a angry Gaster. "It wasn't my fault though it was the Sansy." You laugh seeing him not happy with you either."You didn't have to go along with it you could of said no. What if you were hurt I could of lost you." You blushed at his comment and looked at him. "Does that mean were dating because I'm getting a few mixed signals here." He hugs you to his chest and you hug him back. "I would love that (Y/n)." You both kissed and fell asleep leaning on the counter with Sans sleeping on your laps. When you both woke up Gaster got you to move in and you three went to your new home. You loved that you got to spend so much time with your favorite skeleton family. You all fell asleep that night watching a movie on the couch, except Paps you put him to bed earlier.