Gaster AU x Reader ONESHOTS

Glitchtale x Hate! Orphan! Child! Scared! Reader

You were away from the other kids as Toriel talked to them about soul magic. You were reading about soul magic when the skeleton trio walked in. Frisk was with them as you kept reading. You have met the gang, before your parents died because of Betty.

Gaster looked over as you kept reading with your dark eyes focused on the book. "(Y/n)," you looked over as Toriel offered you a warm smile, "would you like to say hello to Frisk?" You looked down before shaking your head and continued your reading.

Toriel soon left you alone before you glanced over at the other kids. They seemed like they were having fun. You looked down and held onto your crystal necklace charm. Tears rolled down your face as you curled up tighter. Soon you had to go home to the orphanage to see the older kids pranking each other.

You sighed and climbed into your small bed before starting to read your mother's diary. Some older kids noticed you were there before they got an idea. "Hey, shrimp," you looked over as the older kids smirked, "I heard Toriel say that they're gonna take your soul." You froze completely.

~ Two days later ~

Now you have avoided Toriel and the others kids at all cost. You would hide anywhere you could. Today you were hiding in the library when you heard someone come in. You stopped reading, silently closed the book, and hugged the book and your legs close.

You saw a pair of feet stopping near you before whoever it was sat down. "I wonder if anyone knows a good book." You recognised the voice. It was Gaster. You stayed hidden as Gaster could clearly tell where you were.

"(Y/n), I know you hidden behind the bookshelf. Please come out."

You slowly scooted out of your hiding spot before sitting next to Gaster. You stayed silent, like if your life depended on it, as Gaster looked at you. "(Y/n), Toriel is worried about you. Please tell me why you've been avoiding her." Gaster said as you sniffled.

"T..t..the older k..k..kids said y..y..you guys w..were gonna k..k..k..kill me..." You stummered before tears streamed down your face. Gaster was wide sockets before he wiped one of your cheeks. "That will never happen." Gaster stated as you hugged the book.

Gaster noticed you clinging to the book before he smiled. "You really like to read, don't you?" Gaster asked. You nodded shyly as you sniffled and hiccuped. Gaster pulled out his phone and called Toriel to tell her where you were and were was the orphanage you lived in located.

~ ANOTHER TIME SKIP! DEAL WITH IT! ~

You were sitting on the couch with Sans before Gaster came back with a folder. "Sans, Papyrus," Sans looked over as Papyrus looked from the kitchen, "you have a (brother/sister)." Your head shot up as tears made your eyes sparkle.

Papyrus ran in and hugged you as Sans did the same. You were crying over joy as Gaster smiled. He noticed a strain of your hair was turning (soul/color) as your hair started to light up. You looked at Gaster and smiled as he saw your dark eyes starting to light up.

"I ALWAYS WANTED A YOUNGER (SISTER/BROTHER)!"

"*me too pap!"