Why all the Abuse? (An Underfell/Underswap AU)

Chapter 2; A different day

Damn, this is depressing... Oh well! LET'S GO!

WARNING:
*People beating the shit out of each other! :D
*And cursing

Sans ran down the steps, tripping on the last step and face planting the floor.

Papyrus silently gasped out of surprised. Hoping Sans hadn't heard, he quickly covered it with a frustrated sigh, "How many times have I told you to not run!?"

Sans got to his feet, holding his arm in pain, "... Sorry..."

"Just go on to your station. I don't have time for this shit... And if I catch you sleeping on your shift, there will be no dinner either! Is that clear!?"
"Y-Yes Boss..." Sans nervously replied. 

With all that said, they both took off in different directions out into the cold and dusty atmosphere of Snowdin.

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'... Just... don't piss off Boss anymore today. Just don't piss off Boss anymore today.' Sans chanted in his head as he made his way out of the small town. He already screwed up this morning, but if he could just get through the day, then maybe Boss would stop being hateful.

He sure hoped so, he was already feeling shitty enough.

Before he realized he wasn't paying attention, he collided with what seemed to be a big object. He fell to the ground, looking up to see an unfamiliar and large monster eyeing him with an angry expression.

"Hey! Watch it fuck face or I'll crush you!"
Sans blinked a couple of times, realizing what happened, "... S-Sorry..." he apologized under his breath. He had learned it was better to just avoid conflict rather than make things worse.
"Tsk! Get outta here before I get real pissed!" The monster threatened.

Sans stood up and dusted his jacket off, '...Papyrus wouldn't apologize. He'd be all cool and kill this asshole.' He thought to himself as he walked past the monster, feeling daggers being stared into the back of his head.

Who even was that guy?

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Finally, he made it to his station, thankfully unharmed. He then reminded himself of what he was thinking earlier. Don't piss off Boss. Hopefully, if he could just do that, then he should definitely get dinner tonight... Maybe.

Usually, they never had shit to eat. Boss never made anything, which was honestly a little strange. In fact, now that he thought about it, Boss really only cooked maybe twice a week, if that, that he knew of. 

He shook his head, trying to think positive, 'Well, on the bright side, at least I'll be more liable to stay awake now that I'm hungry. Maybe Boss'll even let me go to Grillby's if I do good today!' He thought happily to himself.

Regardless of the outcome, he was gonna at least fucking try today. It was gonna be different, for once. There were two things he needed in this world; Boss' love and acceptance and some goddamn food.

"Hey you! Fuck face!" A similar voice from earlier yelled.
Sans yelped out of surprise, turning to meet the other. It was the guy he'd ran into earlier. Oh god, what now?  

The monster approached him, giving Sans a better view of him this time. He could see he was tall, broad, had brown fur, and basically looked like some kind of bull type monster.

"I was hoping you'd go to some secluded area... Is there anyone here with you? You know it's dangerous to be alone, right? Especially... When you're so small and weak." The guy said with a disturbing tone and grin.