Frisk let out a sigh as she walked around the underground one last time before fighting Asgore. The eighteen year old had made so many friends during her time in the underground. Goat Mom... Undone... Alphys... Mettaton... Papyrus... Sans... It was hard to think that this would be the last time she would see them before she decided the fate of the underground...

"Kid!" Came the yell of a familiar skeleton wearing a blue jacket, black shorts with a shot stripe down each side and pink slippers. If you guessed it was Sans, you get a free cookie! (🍪) Frisk couldn't help a bright smile entering her face as she saw the skeleton before running into his outstretched arms, being engulfed into a warm bear- well- skeleton hug.

The girl snuggled into the others neck softly, both obviously comfortable in each other's presence. "So you've gone through your judgement... know you've got Asgore... the fate of the underground rests on your shoulders..." Sans murmurs as Frisk nods with a sigh. "Yeah... I guess it does..." she murmurs, trailing off as she looked away.

"Listen to me, Frisk..." Sans murmurs after a while, softly placing a hand on his cheekbone, tilting the girls head to face his own. Frisk blushed slightly, looking up at the skeleton. He used her proper name so he MUST be serious...

"I don't mind too much if you kill Asgore and leave to the surface... course I DO care just not as much other people..." Sans starts, falling quiet for a second before continuing. "But... if you DO go to the surface... don't forget about us, alright? Come and visit... or at least call... can you do that for me?" He asked, tracing her cheek with his thumb.

Frisk seemed taken aback by his words, leaning into the touch of the hand. "Sans... of course I won't forget... I'll return... I won't forget any of you... I promise..." she murmurs as Sans looked up at her, his white eyelights filled with hope. "You promise?" He asked in disbelief. "I promise." She smiled, placing a soft kiss on his cheekbone before slipping away from his grasp, walking to the castle, determination in her every step. Sans couldn't help but smile, waving softly. He hoped with all his heart that she would to the right thing.

Much to Sans's surprise, Frisk murdered Asgore with no mercy. After dieing many times, of course. Over the course of a few years, everything in the underground... changed...

Toriel became queen after Asgore left but that was short lived as Undyne took over control and banished Toriel into the ruins forever, all the food was quick to run out which everyone starving, Sans had a 'run in' with the queen who shattered his skull. In return, he told the monsters that whatever humans they found to eat. That's what went on for a full six years of humans falling until another human fell which changed the underground once again. A certain human who made a promise. A human which shoulder length brown hair, deep blue eyes, dark brown pants, deep brown shoes, a faded dark blue and purple sweater and a red determination soul. That human... was Frisk...