It was still very early. Frisk yawned just a bit as they sat on the edge of the mountain waiting with Sans. The skeleton himself was relaxing back against the rock, his bare feet kicking idly. There was a lake down in the basin of the mountains that appeared dark in the very early light. The sun hadn't risen yet, but the horizon was starting to lighten. Fog rolled in the nearby distance, making the hairs on Frisk's body stand in the chill. Switzerland, Frisk decided, was beautiful. They couldn't wait for the sunrise.

Everything was black and white with the exception of the red Soul floating just outside of Frisk's chest. It was second nature now for Frisk to move the Soul without a care. They could easily focus between their actual body and their Soul's vision. The Soul floated around to the back of Frisk and closer to Sans. It hesitated before it touched his clothing. If Frisk focused, they could see Sans's white soul hidden within his body. His clothing and physical form did nothing to hide its glow. They wondered if monster souls could be summoned out of their bodies like humans' could. They doubted it.

Sans peeked an eye socket open to watch the hovering Soul. Frisk could see the casual interest on his face, but they could sense that he was considering something. Frisk could sometimes sense intentions of monsters in battle, but they hadn't sensed Sans's intentions like this before. He was never obvious about them. Perhaps it was because they were close to him? Or was it something else?

The human was musing on it when their entire body jolted back at attention. Cool magic brushed against Frisk's Soul, treating them to a sensation they hadn't felt in years. They felt breathless, fingers clenching unconsciously against the rock they were sitting on. Focusing on their Soul, they saw Sans's fingers barely brushing their Soul. They could taste the blue magic that Sans was a pro at even though he wasn't using it. They couldn't understand what they were feeling, but they noticed that San's cheekbones were stained just a bit darker in their vision.

Sans stared at the hovering Soul, barely acknowledging the slightly trembling human next to him. His entire body tingled with magic, but it wasn't his own magic. Just the brush of his finger against this Soul was enough to overcome his magic three times over. He didn't know how humans could live with such energy inside of them. He felt like he was drowning, but at the same time he didn't want to stop.

Frisk's emotions and thoughts hovered at the back of his mind. Their confusion and their questions. The bliss and the chill they felt from his magic. His name repeating over and over shakily in their mind, as if they couldn't even keep their thoughts steady. This reaction was different than the last time he had done this with them. But then again, this was a completely different scenario.

Sans ran his finger a little down the side of the Soul, not quite touching it. Frisk let out a shuddery breath. Their thoughts were surprised as they realized they hadn't been breathing right. Sans felt powerful in more ways than one. The urge to release his physical matter and blend his magic with theirs was there. Their Soul would swallow his up. A puddle of water in a lake. Still, the urge was there. It didn't help that Frisk was also desiring it despite the tang of fear persistently warning both of them.

This was more intimate than anything he had done with Papyrus. He loved Papyrus, but the feelings they shared when their magic and souls were this close was nothing like this. This was tense and burning. Frisk was completely under his control if he really wanted to do anything to them, but at the same time Sans would destroy himself in the process. He didn't want to find out what would happen if he touched their Soul directly. The blue of his magic as his fingers dissolved just a little and touched the Soul was bright against the lightening sky.

"S-Sans . . ." Frisk breathed, body trembling just a bit more. A new sensation reached Sans's mind. It was heavy and thick. He didn't know what it was exactly. He had never felt anything like it before. Frisk seemed to recognize it, though. Image after sultry image passed from their thoughts into his. Sans's eyes widened from their half-mast state in realization. This was what arousal felt like. It was . . . strange. He supposed he could see why Frisk enjoyed it. It made him antsy, but he wasn't sure how to resolve it. He knew these were just echoes from Frisk's own body.

Frisk closed their eyes and swam in the cocktail of emotions they were feeling. It was a little embarrassing for their body to be reacting the way it was. They were completely vulnerable, and a part of them was terrified for this. However they trusted Sans and knew he wouldn't hurt them. Not like this. Not right now. At the moment their fear just wasn't powerful enough to rise above the tide of Frisk's desire. It took all of their willpower not to move their Soul further into Sans's touch. Their body ached to turn around and kiss him.

It was almost too much. Frisk was going to break. Sans pulled away right before what self-control they had snapped, and they gasped as they broke the surface of their sensations. Their concentration on the magic holding their Soul out of their body broke, and suddenly Frisk was solid and whole and heavy again. Sans's hand grabbing the back of their shirt and yanking them to lay back with him on the stone was what saved them from toppling to their death. Their body hummed and thrummed with magic and arousal. They had to swallow a couple of times and grip their shorts tightly in order to ground themselves.

Sans was staring at them. Frisk took one more moment to regain some more of their bearings before they turned their head to meet his gaze. It was heated despite everything. Frisk wondered exactly how much he had seen and felt of their thoughts, and then became a little embarrassed as they realized exactly what their heated mind had come up with. Some of those things certainly weren't plausible.

Sans's eye sockets looked like starry skies again, sending Frisk's slowing heartbeat back into a gallop. He was so beautiful. The pinks of the sunrise burned across his skull. Mischief clouded the innocent sight as his grin widened. "'magic cock'?" Sans quoted one of Frisk's rather desperate thoughts.

Frisk covered their face in mortification. "Shut up." They said, lifting their shirt to hide their face more as Sans's laughter filled their ears.

"pervert."

"You caught me off-guard."

Sans's finger (the naughty finger that had caused all of this) tapped Frisk's knuckles. "interesting thoughts."

Frisk spread their fingers to peek at him between them. They hesitated before asking, "Can magic be used like that?"

Sans snorted and sat up, chuckles rumbling in his chest. He stood up and brushed his shorts off as he gazed at the sunrise climbing over the mountains. The morning mist was thicker now, and lights were starting to come on in the cottages down below. "how about you practice that and let me know how it goes."

Frisk dropped their hands and sat back up. The scraping of the rock against the backs of their legs helped to ground them some. They didn't respond to Sans's suggestion, deciding it more prudent not to embarrass themselves anymore. They shifted their legs, rubbing themselves a bit. The sight before them was beautiful, but it would be nice if they could get somewhere private. Even without Sans reading their thoughts, Frisk could tell he knew what they were thinking as he snapped a picture on his phone of the sunrise and laughed more at Frisk's situation. Frisk huffed to themselves. Sans could be such an asshole sometimes.