Gaster AU x Reader ONESHOTS

(request) Handplates Gaster x Subject 3! Reader

You summoned a bone as you sighed, you were locked in a cell next to Sans and Papyrus without knowing you were part human. You had a light blue shirt with grey sweat pants, you also had magic like both Sans and Papyrus as well as the determination of a human. You sighed again and stood up, you walked around your cell while allowing your hand to brush against the metal walls. You started to hear screaming and winced. Earlier Sans had tried to break Papyrus out until Gaster caught them. You covered your mouth as the screams got worse.

You felt tears streaming down your face before the screams stopped, your eyes widen to Gaster walking with Papyrus and Sans, Papyrus's arm was snapped. You stayed silent as Sans looked at you, you felt the fear I'm his eye sockets. "Subject 3, come along." You quickly wiped your eyes before rushing to Gaster's side, you were nervous and feeling sick. You followed Gaster until you saw a metal chair with straps on it, your throat got suddenly dry as your breathing quickened. You were terrified. Gaster grabbed your wrist and dragged you to the chair before strapping you down.

"Subject 3, have you been seeing images?" "Y..yes sir..." Gaster placed a metal helmet on your head and shoulders as wires were connected to your neck and forehead. "I will turn this on, if anything goes wrong, let me know." You blinked away tears as a zap went through your body, images flashed of Papyrus and Sans dying while you were being held by the collar of your (f/c) hoodie. Before the figure could stab you, you felt yourself screaming before Gaster turned the machine off. You were panting as Gaster ripped off the helmet, wires, and straps.

You had sweat and tears mixing as Gaster tried to get you to focus on him, you were in shock. (Y/n)! Your hands were shaking as you tried to breathe. Subject 3! (Y/n)! Gaster had no other choice. You snapped back to reality when a pair of lips touched yours, your face was a dark red before Gaster pulled away. "Subject 3, what did you see?!" Gaster asked, you explained the images to the best of your ability before looking at Gaster. "Why did you..?" "You will not inform Subject 1 or 2 about that." Gaster interrupted while blushing slightly.

You rubbed your neck before mumbling something. "What was that, Subject 3?" Gaster asked, turning to you. You took a deep breath before closing your eyes tightly. Were you going to regret this or was this a good idea? "I.. I love you..." You said in a whisper, Gaster blushed before he took your hand in his to pull you off the chair. You blushed as Gaster lowered himself (u r a bit shorter than him) to your height. "I love you too." Gaster whispered before kissing your forehead, you blushed and smiled. Maybe Gaster wasn't all LVE after all!