Undertale x Reader One-Shots

Kids? (Sans x Reader)

(This is based on the Pacifist run, but Chara's still here. Oh, and you are a human.)

Sans looked over the scene as he entered his house. (Y/N), his girlfriend, was sitting on the couch, Frisk on her lap with Chara next to her, Papyrus was on the floor with Undyne playing video games, and Alphys was sitting next to her crush, cheering her on.

(Y/N) looked up at him. "Oh hey Sans. How was work?" She smiled sweetly to him. The skeleton shrugged, "Ehh, same old same old." Frisk giggled at him. (Y/N) looked down at the three on the floor and huffed. "Pap, your brother's home." The younger skeleton waved a hand behind him, muttering a "Hey Sans...." before continuing with the game.

Sans walked over to the couch and plopped down next to his girlfriend. "They facing of in the 'ultimate battle of power' again?" He tilted his head toward the two furiously pressing buttons. "Yeah, but they've been at it all day." Her face suddenly became irritated. Chara snorted, "It's actually quite entertaining." (Y/N) lowered her voice so only Sans could hear, "They didn't even come with us to the park."

"So we've got the kids for the weekend?" Sans mentioned, trying to break the tension building up around the girl. (Y/N) turned to face him, "Yep, Tori's at another meeting session with the human leader, and won't be back till Monday. So we get these little guys for two more days," Frisk giggled as the older girl ruffled their hair. Chara huffed, "At least we have you instead of Mettaton." Both kids shivered at the thought.

"Well since these guys are obviously doing something "important", we could maybe go out and play in the snow?" Sans seemed to ask his girl, more or less. Her (E/C) eyes widened and a grin spread across her face. "Sans, we'd love to." With that she leaned over and pecked him on the cheekbone. Frisk stuck out their tongue and shook their head and Chara gagged. "Oh hush you." (Y/N) giggled.

"Come on peeps, let's go get our snow gear on" The (Y/H/C) lifted the children up in her arms and walked to her room.

~~~Time-Skip brought to you by dat boi~~

Frisk dragged Chara, much to their disapproval, by their hand to a huge snow poff. (Y/N) followed close behind. The young woman chuckled at the child's enormous smile.

Sans walked a bit behind the three. He watched as the children and his girl played in the snow. The skeleton sighed as he remembered when she came to the Underground. The girl had fallen not long after Frisk had but, unlike the child, had stayed with Toriel. (Chara had showed up after she was split from Frisk's soul in the judgment hall.)After the barrier was broken Toriel revealed the young woman.

(Y/N) had never said why she came to Mt. Ebott, but it was obvious that she didn't really want to go back to her old life. At first Sans didn't want to push her to much since she seemed to let the past stay there. But after Papyrus invited her to live with them, after Toriel had gotten the role of Ambassador for Monsters and hadn't been around as much. Soon the skeleton had fallen for her, and asked her out on a date.

Sans learned that (Y/N) had fallen of her own will. She had wanted to die due to the fall but when Toriel found her, the (Y/H/C) realized that this was a new start. And she took the chance. (Y/N) was in tears by the end of her story, and of course, as her boyfriend, Sans had wrapped the poor girl in his arms and promised to protect her no madder what.

They had been together for a year now, and it made him smile a bit wider to think he could be so lucky. He was broken out of his thoughts by Frisk's shriek. (Y/N) had buried the child's legs in a snow poff. As they struggled to release themselves the (Y/H/C) chuckled. That is until Chara threw a snowball that hit her in the face. "GGGAAAAHHHH" (Y/N) screamed, "COLD! COOOLLLLDDD!" She jumped around wiping the frozen crystals off her face.

Once she was clean of them she turned back to Chara, "Why you..." her face almost seemed to steam. With that she leapt at the child and dunked them in the snow. "EEEPPPPP!" They cried as the older girl pulled her back up and spun them around. Frisk freed themselves and jumped on (Y/N)'a back. This sent her toppling forward on Chara.

Sans quickly caught the three with his magic. He placed (Y/N) back on her feet, and pulled Frisk off her back. The young woman placed Chara on the ground and kneeled before the child. "You okay kid?" The (Y/H/C) asked worry obvious in her eyes. Chara nodded, "Sure I'm fine, but their not." They pointed behind (Y/N). As the older girl turned Frisk slammed a snowball into her face.

"AAAAAHHHHH! NOT AGAIN!" She cried clawing at her face to remove the snow. The two children laughed Chara patting Frisk on the back.(Y/N) got the flakes of her face and fell backwards in to the snow. "I give up!" She cried, arms up in the air to show surrender.

The two kids jumped next to her and started to make snow angels. Then, after Chara "killed" the angel impressions (She claimed they were looking at her wrong,) they started making a snowman. Frisk was making the head, Chara the middle, and (Y/N) was on bottom duty. "Let's name it Scourge!" Chara grinned as they started to build up the man of snow. Frisk shook their head. "Well what do you want to name it sweetie?" (Y/N) asked the child. Frisk waved the girl down to whisper in her ear. The (Y/H/C) nodded, "I like that. Hey Chara, can we call him Steven?" Chara shrugged, "As long as it's not Frosty I'm fine." The young woman chuckled.

The (Y/H/C) looked over at Sans and smiled. The skeleton grinned back, 'She's so beautiful when she smiles like that.' He thought. Once the Steven was completed, (Y/N) picked up Frisk and Chara one child in each arm. "Come on kid, it's getting late. We should head back." Frisk nodded and Chara yawned. The woman walked to Sans were he plucked Frisk from his girlfriend's arms and placed them on his shoulders. (Y/N) sighed, "Thanks love," and took his boney hand in hers. "No problem." The four started the walk home.

~~~Time-skip brought to you by Pickles~~

After the children were fed and tucked into bed on a roll-away mattress in Papyrus' bedroom, and (Y/N) read a bedtime story to the three, she plopped down on the couch next to her boyfriend. "Few, that was fun." She yawned. Sans chuckled, "You seem to be good with kids." The young woman snuggled closer to him. "Yeah, I've always wanted some of my own." She mumbled.

Sans blushed at the comment. She wanted kids? Did she mean she wanted to have kids with him? After a minute he pulled together a small amount of courage and asked, "You mean some of our own,"

(Y/N) shifted so she looked him in the eyes. "I'll hold you to that mister." Her voice was serious, but her eyes where chalk full of the hopes and dream of the future. Sans nuzzled his forehead to hers, "Of course. I wouldn't want anyone else to have my children."

(Y/N) smiled softly at him, "I love you," a small tear of joy slipped from her face. He sighed happily, "I love you to (N/N),"