It had been a few hours since you last heard from Sans, but you weren't too concerned. He was most likely out doing something, which wasn't exactly a complete rarity. However, you did wonder what he was up to with the lack of his presence.

About an hour later, you would hear the door open, indicating the sound of Sans' return home. As you turned to go greet him, you were met with the sight of a man standing in the doorway. A human man.

Hey, whatcha up to? Just got home, but I'm pretty sure that's a given. By the way, like the knew look? I figured I'd try something knew, see if I could feel more in my skin.

A small chuckle left him as he joked. He sounded exactly like Sans, and now that you were actually taking in his appearance, you saw he was wearing his clothes, too. However, Sans was a monster. A skeleton monster, to be specific. So who was this human?

However, what you didn't know, was that this human was Sans. He went and turned himself into a human for you. For awhile now, he felt like he wasn't enough for you. Of course he knew you cared about him, no matter his species, but he wished he could give you what another human could. As a skeleton, he wasn't able to give you what all human couples could, and that made him feel bad. So, after a few experiments with Alphys, he managed to change himself.

After a few moments of silence between the two of you, a smaller, more sheepish laugh emitted from Sans' throat.

You good there? You're lookin' a little chilled to the bone, heh.