Frisk held on tight to her determination. Her heart pounded as she waited for whatever monster that was stalking them to reveal himself. She just couldn't shake the feeling of familiarity from the otherwise strange voice...And when the monster stepped forward, she knew why. 

Her heart skipped a beat. It was...Sans! But not Sans. This version was different, darker in color and more sinister despite his lazy smile and tone. There was something off about him, which was clear to see but hard to explain. It was like he was glitching out, and entirely unstable.

Frisk tightened her hold on Sans. She knew there were other realities out there, entirely different versions who existed with their own timelines. How she knew, she didn't want to admit. But those were thoughts for another time.

The hatred that came from the other Sans made her stomach churn. It was a look she had seen before, but the intensity of it made her shudder. She had never seen this Sans before, she was sure of it. So why did he care what was going on in their reality? 

Before she could ponder that thought, she found herself being jerked and squeezed as her Sans held her tight while dodging the attacks. By the time she was being set on the ground, she felt a little dizzy. She put a hand to her head and blinked, frozen until she saw Sans motion for her to stay. She opened her mouth to argue, but he was before she could even think of what to say.

"Sans!"

Frisk scooted to the side of the boulder and peeked around it to watch the fight. She didn't want to just sit there, but for that moment decided that Sans would be the better person to take care of this. Who else to fight Sans, than Sans himself? But this one fought differently...He used strings to guide his gaster blasters. It was unnerving to witness. 

Her body went rigid as the fight continued on, her heart nearly stopping as her Sans was almost hit. That's all it would take...One hit, and it would all be over. Sans would be nothing but dust. With his lack of sleep, Frisk wasn't so confident that he was nimble and alert enough to keep dodging forever.

She put a hand to her mouth, muffling her gasp of shock, as her Sans was pinned. No...No, no, no! Her heart raced as she watched. She was no longer listening to what the other Sans had to say, as at that point she was too busy getting to her feet. 

Frisk dashed forward, hurling herself away from the boulder and towards the two skeletons. Without hesitation, she flung herself in front of her Sans with her arms held out, shielding him as best she could. If she got hit, it'd be a nasty strike. But at least she wouldn't turn to dust.

"Stop! Please, just...Stop." Her determination flared, yet her eyes pleaded with the other Sans. "I know there's probably nothing I can say to make you hate me any less. But please...Don't take it out on anyone else."