Gaster AU x Reader ONESHOTS

Glitchtale Gaster x Loyalty! Reader

Your younger sister had a light pink soul, not hot pink, light pink. The love soul. When your parents left her, your soul made you stay with her. You were loyalty. You never allowed anyone to hurt your little angel. That was actually her name, Angel (l/n). Today you and Angel were meeting up with your good friend Papyrus. He said 'Toriel' would let you both stay at his place. You eventually got to the house with Angel before knocking on the door. Angel looked at you with her light pink eyes, you looked back at her with your blue eyes (like the soul above) and smiled at her kindly. "Don't you worry-!"

You both saw a short skeleton in a blue hoodie. Your eyes snapped to dark blue in a second. Papyrus warned you that Sans didn't know about the love soul. "Who are you two?" The skeleton asked, "We're friends of Papyrus!" Angel answered happily. The skeleton took one look at Angel before a blue line surrounded her. "AHH!" Angel cried, you growled before more monsters came outside. "Put Angel down, you bag of sh*t!" You ordered, Sans ignored you before you charged at him and knocked him out. Angel was dropped, but caught by Papyrus. You checked Sans and saw he lost only 0.5 hp.

A skeleton, not as tall as Papyrus, saw you stand up and trot to Angel as Papyrus placed her on the ground. "Are you ok, Angel?" You asked, Angel hugged you and started to cry into your chest. Your eyes returned to their natural blue as you sighed and petted Angel's hair. "Lets all go inside before anything else happens." A goat women suggested, you carried Angel in as the tallish skeleton carried Sans in. Your soul's thrum made Angel drift to sleep.

- months later -

It's been a few months since you and Angel moved in. In that time, Sans learned Angel didn't have the fear soul and that you had loyalty, which was why you knocked him out. Gaster did help Angel with her depression problems by letting her work with him in his little lab. Today you walked in to see Gaster and Angel working on... microwaving hotdogs? "Ten seconds." "Got it Gasty!" You walked over and stood silently next to Gaster to watch this little experiment. You got a glance of the work.

'What brand of hot dog will explode quickest?'

It was kinda fun to watch. Angel looked like she was having fun and enjoying that she could help someone. "Ok Angel. I'm gonna get more-!" Gaster had turned towards you and accidentally kissed you. Angel was laughing and may have fallen off her chair as you and Gaster blushed, neither of you pulled away. You finally pulled away and backed up. "Uhh... I should go." You quickly left while hiding in your (f/c) hoodie. Gaster was covering his blushing face as Angel kept laughing and yelled out a ship name.

"(Y/N)STER FOR LIFE!"