New toy { Underfell sans x reader (smut) }

His gaze

Your once-flushed cheeks lose their lustre in a matter of seconds, leaving you feeling exposed and vulnerable to his amused gaze.

"Startin' to like me already?" A wider grin spreads across his face, as his gaze lingers on your fingers interlocked with his. His voice sounded so smooth, that you almost found yourself agreeing. Your heart starts to race as you stare into his crimson pupils. You try your best to focus on how you should explain yourself, but his eyes leave you feeling like you're caught in some kind of hypnotic trance.

Ah! Fuck! Why'd I even do that... What am I even supposed to tell him? "Um... My hand was cold..." Wow, that was the best you could come up with, idiot? You turn your head away from him, trying to hide the heat of embarrassment rising to your cheeks.

"Y'know... You'd look a lot prettier if you smile more..." He says bluntly as he leans in closer, kissing your warm cheek.

Another kiss..? This guy is a psycho! It's like he has two completely different personalities! You think to yourself, feeling dizzy as he continues to hold you close.

A couple of long, and very silent minutes pass, with his grip around your stomach still not having loosened. Maybe he fell back asleep?

You're startled as Sans speaks out, "I'm starvin', how 'bout we go get something to eat, my treat...obviously." That reminds you. You haven't eaten anything in a while, the last thing you remember eating was a handful of stale candy that had been left out in the ruins. Your stomach growls embarrassingly loud.

You can hear him cracking up from behind you, once again laughing at your demise. "Alright, I'll get 'cha something to wear, wait here." Sans loosened his arms around you, allowing you to finally get a breath of air. He sat up and straightened his spine, letting out a quiet groan. Tugging the sheet off both your bodies, he sluggishly drags himself toward the closet.

You watch him struggle to slide open the jammed door, you assume that's why there was a fist-shaped hole in it. While he did this, you had the chance to allow your eyes to wander his room.

The room was dark, but you could still make things out if you stared long enough. Off to the side of the room is what looks like a window, which could've allowed light into the room if there wasn't a blanket crudely nailed over it. Under the window was a dresser that happened to be missing every handle except one. Next to it, was a lamp, which was missing a lampshade. It annoyed you slightly that he didn't bother to turn it on. On his floor was his massive black jacket, four random socks, and an ashtray that had been tipped over.

The more you looked around, the worse the room looked. A hole in the wall, broken glass near the window, even the light switch was broken. You wondered if the switch even worked as you analyzed the colourful wires protruding out of it. 

This guy seems like a mess. Definitely anger issues... The thought of this made you queasy. After seeing what he could do to you without using his true power, you knew you didn't want to see him angry.

You jumped to attention as Sans loudly shoves the door open. Sifting impatiently through the rack of rattling hangers, he yanks out a large black knit sweater with red stripes on the front.

As he's once again struggling to shut the door, he tosses the sweater behind himself, landing in your face. While he's distracted, you quietly slip on his sweater, feeling its softness against your skin. Same as the shirt, it's way too big on you.

You look down at the floor blankly, feeling lost in thought. What will happen if any monsters see me while we go out? Would they want to hurt me? He intercepts your thoughts, almost as if he could read your mind, Sans answers your unspoken question. "You don't need to worry 'yer pretty lil head, I'm not gonna let anything happen to you on my watch." He turns to face you. His eyes stare with a penetrating gaze, beaming straight into your soul. " I made sure everyone's gonna know yer mine..." His eyes brighten. Suddenly, the jagged edges of the wound on your chest throb with hot, searing pain, sending a wave of agony throughout your body. You bring your hand up to your chest and touch the mark. What is this guy going on about? I'm his?

You wanted to curse him and monster kind for their sick traditions, but after meeting him a few days ago, you quickly learned to watch your mouth around him. You look up at Sans for answers. "...Did you mark me?" You make eye contact with him, waiting for a reply.

A dark glint appeared in his eyes as he bared his teeth in a malevolent smile. "Somethin' like that..."