Gaster AU x Reader ONESHOTS

Reapertale x Goddess! Reader

You were Undyne's sister, the goddess of War Strategies and Wisdom. Right now you were dealing with the matter of the goddess of life being killed. "We should find who did this and make them pay!" Undyne growled, you sighed softly at your sister's actions. "Undyne. It wouldn't be wise to attack this... thing... without the knowledge of what it is it or what it can do. Right Gerson?" You advised, Gerson nodded as Alphys grew nervous. "What would you do then?" Undyne snapped, Gaster glared at Undyne before you summon your sword and pointed it at your sister. "I'd make a plan THEN allow my sister to go nuts." You snapped back.

"G..guys! N..n..now is NOT the time to f..fight!" Alphys chirped before your pet owl flew in. You opened your arm as the little white bird landed on your lower forearm. "What is it, River?" You asked, River chirped before handing you a scroll. You took the scroll and opened it up. "It's Asgore. He wants Gerson to meet with him at once." You said after a few minutes of reading, "I had a feeling he would want to see me today." Gerson chuckled.

You sighed as you petted River gently. "I'm going to find Sans! He has to know SOMETHING about this!" Undyne growled, "Undy-!" You, Gaster, and Alphys saw she was gone. You sighed before Alphys decided to do some research. Gaster watched as you sent River away with a message in (his/her) talons. "I'm sending Papyrus a message so he can know what Undyne is doing and hopefully put some sense into her." You explained before storing your sword in your (magic/c) soul. "(Y/n)," you turned to Gaster, "I want to show you something." You followed Gaster to a large mirror.

Gaster suddenly and gently took your hand into his, making you blush, before walking you through the mirror. You gasped at the large field of stars. "Gaster... This is incredible." You said in admiration, Gaster smiled until he realized he was still holding your hand. "(Y/n)..." You turned to face Gaster before he held both your hands, you tilted your head slightly while looking into his eye sockets cutely. "(Y/n)... I..I..." "Yes Gaster?" Gaster stared into your eyes as you both leaned in. 'Come on Gaster... Just do it.' Gaster thought to himself silently.

"(Y/n), I love you." That's when Gaster pulled you into a kiss. Your eyes widen before you started to kiss back. You both pulled away and smiled. "I love you too, Gaster." You said softly before you both stared into the stars.