Just One Night

New Beginning

Frisk's heart faltered for a moment. Her soul quivered in front of her eyes, the very news she had received shaking her to the core. The machine was quickly shut down and she felt her soul return to her body once more. She looked up to see the worried faces of her monster friends. The monster duo merely looked at her abdomen in confusion before looking back to her face. Sans on the other hand had wrapped his arms around her and brought her close to his chest. The silent tremors moving through his body and the shaky breaths were what gave away his crying. She looked at the monsters in confused fear and clung onto Sans while he cried onto her hair. Just what had they found?

Alphys took charge and stood beside Frisk with a clipboard in hand. She grabbed the stethoscope dangling from her neck and checked Frisk's breathing, after moving Sans aside of course. She checked her pulse and scribbled down a few notes on a chart. Frisk looked up at the dinosaur, waiting for the initial check up to be done. Alphys nodded to herself after checking over Frisk's body, even touching her abdomen gently.

"So, doc.. what's the verdict? What exactly is wrong with me?" Her voice came out barely a whisper.

"Nothing is wrong per say... but ah, Sans, I think you should tell her." The dinosaur finished with a nervous glance to the skeleton. Frisk turned her attention to him while he nodded silently and grasped her hands. A light blue blush dusted his cheeks.

"Frisk, you're pregnant."

And just like that the world seemed to stop. She payed no attention to the silence and awaiting monsters. Her mind whirled with unspoken questions. How did this happen? Yes, besides the obvious reason of having sex, she knew that's what led to her pregnancy. But in the past year that she and Sans had been together, he had assured her that there was no possibility of being pregnant. When she questioned that, he explained that only through souls merging could a monster fall pregnant. When she questioned that logic he explained that since monsters are made up of magic, sharing souls and the magic between one another could potentially create a new soul.

Snapping out of her thoughts, she realized Sans was staring into her eyes with a look of shock and happiness, "Frisk, are you okay?"

She nodded and absently rested her hand on her flat stomach, "Y-Yeah. Just.. how?"

He frowned slightly, "Well when we.. bound our souls, we were fully mated. You accepted me fully and vice versa. After the ceremony, we merged souls continuously that night.. You remember that talk we had? About monsters merging souls can lead to new life? Well there's ways to prevent it.."

His eyes left hers and his gaze trained on the floor before he put his head in his hands, "I could have formed a barrier of sorts for protection, so our magic wouldn't cross and cause.. this..but I didn't think... God, I didn't think you could fall pregnant." He explained quietly, his voice failing at the end.

Alphys chimed in with a sincere expression, "Sans, you didn't know. We have no records of monsters and humans mating. There was no way you could have known-"

His head snapped up, tears leaking from his sockets, "But I could have at least tried to prevent this! Had I been more careful-"

Frisk's angered voice cut him off from his self depreciating rant, "And who says this is a bad thing? We both chose to bind ourselves to one another, to merge our souls as we...made love," she whispered a bit embarrassed before continuing her rant,"It's not like you made this child all by yourself, you know?"

Sans opened his mouth but she continued on, "I don't care that it happened. I mean, I do care because it's our child, but I don't regret it. The love that we shared between one another was priceless. Becoming your wife was the happiest day of my life, and now we have the proof of our love growing inside me."

She grasped his skeletal hand and brought it to her stomach, "We made this together and we will deal with this together. It's not exactly planned, but I am not ashamed of this, nor do I want you to feel regret. Neither of us knew what would happen, so no more blaming yourself and focus on being a father."

His eye sockets widened and he stifled a sob with a deep chuckle and pulled her close. He kissed her forehead tenderly and let his hand caress the flat plane of her stomach. His mind was still a bit conflicted, but his heart was swelling with pride.

'I'm going to be a father'

The thought filled him with an indescribable happiness. He heard the other two monsters giggle at the scene before them. His face flushed a bright blue and he turned to look at the fish and dinosaur with at slightly annoyed look. Undyne teased them good naturedly while Alphys shuffled anxiously between one foot and another.

"So, now that the news is out, I'd like for you to come and see me every two weeks for now. We don't know how long it will be before you give birth, since there is no documentation of something like this ever happening before."

Frisk looked up at the scientist in confusion, "Wait a second, what do you mean this hasn't happened before? If there was some evidence of human-monster hybrids, surely there would be children of those hybrids?"

Alphys on shook her head, "No, the archives only speak a little on hybrids and from what we have gathered there were only a select few that existed. You see, merging souls is normally impossible for a human to do since most humans do not possess any magic. You on the other hand, your very soul is filled with it. The determination you have allowed for a true soul binding between the both of you."

"What do you mean a true soul binding?" Sans questioned.

"A true soul binding occurs between two magical souls combining in matrimony. The very essence of our beings merge and flow inside one another. But if a monster were to take a normal human in a forceful soul bond, it could be disastrous. The human's life would be extended to match the monster and they could take on a few of the powers a monster possesses. However, the magic that the soul would possess would drive them insane over time. There was only one documented case of this, but both the monster and human had to be.. eliminated."

The words sank in slowly. Everyone felt the tension descend upon the room, but the dinosaur merely coughed and carried on her conversation, "The information is secluded and hidden well so as not to give monsters any ideas for it would only bring tragedy upon us. You must not repeat what was spoken here. And back to your relationship, you have a true soul bond since you both consented to the union. Your pregnancy is new and foreign to us, so I do hope that you allow us to regularly assess you. We want to keep track of your progress and make sure the baby develops without any complications."

At the expecting couple's nods she smiled warmly and led the group back upstairs to the main floor. They were glad to leave the creepy basement. Frisk and Sans sat for a while and listened to Alphys as she explained a normal monster pregnancy to the curious Frisk. When they finally had a decent understanding of a normal monster birth and what to expect they left to go to Papyrus and Mettaton's home, their former home.

Frisk could only smile at the news and wondered how the the skeleton and robot couple would react. Sans smiled and wrapped his arm around her waist as they walked, happier than he had ever been.