Their little Frisk (Undertale fanfic)

🖤twenty-five🖤

•3rd POV•

Sans woke up breathing heavily. His sockets widened, his orbits flared bright blue to show he was wide awake. He had a hand to his chest as blue flames coursed through his body.
"SANS? SANS? WHAT IS IT BROTHER?" Papyrus woke up startled when feeling the disturbance of Sans.
They had to stop in an old abandoned shed. It was nighttime, they had to stop and rest. Besides, cops were looking everywhere for them.
"I thought... I thought... I heard Frisk screaming," Sans let out a shaky breath, his sockets filling with tears. "I can't do this anymore. I need my girl in my arms, I can't make a single pun and smile. I miss her so damn much it hurts! And I'm scared she's hurt, or worse," he clawed at his skull only to have Papyrus gently grab his wrists to stop him.
"Frisk is a strong human. She will be ok. WE RAISED HER AFTER ALL!" Papyrus ensured him, which made Sans sadly smile.
"We did... Didn't we?" He nodded and let out a soft chuckle.
He had this voice tugging at his soul that told him something was not right. He didn't want to believe she wasn't ok. But he knew she was endanger deep down.
"Gah, I need to find her... She's in danger, I just know it," Sans heaved.
He got up, grabbed his blue coat and pulled it on. He flipped on the hood, shivering a little as his brother watched with deep concern.
"Brother? WHERE WOULD WE EVEN BEGIN LOOKING FOR HER?" Papyrus questioned, getting up and slipping on his red mittens.
"I don't kn- wait... I know," Sans looked at his brother with determination. "I know how we can find her," Sans looked outside and made sure the coast was clear before fast walking down the streets.
"HOW!?" Papyrus asked with big sockets.
"Who else has only the entire access to the street cams and whereabouts of almost every human being and monster?" Sans smirked, hurrying his pace to a sprint.
"OF COURSE! METTATON!" Papyrus puffed out his chest proudly and Sans just gave his brother a glare over is shoulder.
"What? No! Mettaton's creator, Alphys! Dummy!" Sans rolled his orbs and grumbled under his breath. "That piece of tin can, can go suck a di-"
"SANS!!" Papyrus quickly scolded his brother who chuckled under his breath.

It took the brothers a few hours to find Alphy's laboratory. The place was outside of town, a big laboratory. Sans hoped that she was still here at this hour. He knew she wouldn't turn them in and would be more than glad to help them... Hopefully.
Sans knocked on the door, but after two minutes there was no answer. Sans looked up at his brother who was squinting at a rope hanging on the side of the door. Papyrus grabbed it and pulled it down to have a loud "DING DONG" doorbell ring which made Sans jump a bit.
There was sounds of clicking and gear shifting before both brothers felt the small square like porch beneath them shifted down. They looked at the ground only for it to open up like a trapdoor.
Sans and Papyrus screamed in surprise, falling down a dark tunnel.
"AAHHHHHHH!!!!" Sans was spinning around and found while he slid down some sort of tube like slide.
He couldn't see where they were going but he lost his stomach back up there.
"AAAAAAHHHHHHH!!!!" Papyrus' screams were worse than Sans'.
There was finally a light at the end of the tunnel, throwing Sans out first as he flailed his arms and legs as he went soaring towards the wall.
"NO NO NO!!!" Before he knew it, all he could hear was the sound of metal ringing in his head as he had hit his face in the wall, sprawled out on the wall like a starfish.
Papyrus came next and slammed into Sans' back, impounding him in the stone wall hard enough where Sans was kind of stuck.
Papyrus fell back onto a comfy mattress which was suppose to be where they were to land...
"AHAH! THAT WAS NO MATCH FOR THE GREAT PAPYRUS!" Papyrus laughed, sitting upright on the mattress.
Sans groaned and slowly pulled his face off the wall.
"Hhhh... Ow..." He squeaked and fell from the wall on the mattress with a pained expression. "I think my humerus is broken-" Sans coughed and finally looked up to see where they were at.
Ah yes, they were definitely in Alphys' lab from the looks of machinery, computers, technology. It was very dim in there though. And eerily quiet other than the whirring of machinery.
"Uh... Hello?! Alphys? It's me- Sans... And Papyrus," he got up off the mattress, dusting himself off as he began to wander around.
From the dark he saw a figure sitting in a chair, their back facing them.
"Alphys?" Sans questioned hesitantly, slowly approaching the figure.
Small pained groans came from the figure, getting off the chair,  she stumbled from the darkness to reveal the figure of none other than- Frisk.
"KID!!!" Sans instantly ran to her and tackled her in a bone crushing hug. "Kid... Oh god I was so worried..." Sans held her tight in his arms, nuzzling her close.
"HUMAN!!!" Papyrus quickly joined the hug, as Frisk hugged them back tightly.
"It's been... Awful... I've been... Tortured... B-By T-Tony," Frisk stuttered, tears streaming down her face.
"Where is he?! I'LL KILL HIM!" Sans snarled, his orbs glaring an angry blue flame.
"I... I had to... To... K-Kill him," she gasped and clung to Sans tighter.
Sans hugged her tightly, looking over her shoulder he could see from the darkness... Something was laying on the ground... Or more like... SomeONE... he furrowed his sockets and slipped away from her, seeing the silhouette of a limp hand. Though he was stopped when Frisk grabbed his hand and sniffled. He looked back at her, expecting to see her brown eyes, but he was met with pure blood red eyes.
"...Kid?" Sans questioned barely above a whisper, pulling away from her and stumbling towards the figure.
When he got close enough his eye sockets widened in horror to see a lifeless Alphys laying on the ground. He looked over his shoulder as he witnessed Frisk stabbing Papyrus with some sort of sword, causing him to drop dead and his soul to be absorbed. Frisk's hand sizzled like acid holding the weapon, clear now when you looked at her hand how burnt it truly was. The smell of burning flesh was terrible and Sans' soul dropped to the ground in complete shock.

"Oh Sans~ you were always so nosy~"

A/N: HEY! Yeah I know I'm late, once again 😬 I just had zero inspiration and was like on a really bad writer's block which is why my writing has been absolute crap lately, I apologize for that one. But I luckily, pushed through and know that you guys that have been sticking around have been waiting for another chapter, and I thank you for all the love and support. You know it really makes my day with every vote, comment, and view I see on my chapters. I adore every single one of you and I hope I can continue to share with you guys. Hope you all are having a wonderful day, stay safe and thank you again <3