Why can't I have just one normal day? (Error Sans x reader)

Part one- Nothing is normal.

After that, they talked with you and your boss more. Turns out they protect AUs like yours from being destroyed. But you couldn't help but feel that you five were being watched. Noticing the time, you stand up and start to get ready for the day. Before the trio left, they gave you something. It was a necklace with a glass vial filled with a black substance, likely paint. You thanked them, put it around your neck, and started your shift.
[after your shift]
You sighed, collapsing on your couch. Your stomach rumbled. You groaned and got up to go and grab a snack. "Do I really not have anymore- oh wait nevermind here it is." You muttered to yourself while trying to find your favorite snack.  You grabbed a few and sat back down on your couch. Turning on your TV, you skip to your favorite channel, where it has a lot of good Spanish shows. Luckily, you spoke Spanish, so you knew wheat was going on. You loved watching the dramas. You completely indulge yourself into the current show on. "Oh come on! It was obvious, Marta! How did you NOT see it? Are you that oblivious?!" You say, as the main character found her husband cheating. You hear a chuckle behind you and think nothing of it. "Foods in the fridge, don't take anything else. Eh, maybe a piece of sliverware or two. I'm watching a drama! ... wait- " You say. You notice that there was a skeleton behind you, leaning on the back of your couch. "Wanna watch with me?" You ask. "Sure. You do know that I don't know what their saying though, right?" says Sans, one of your two roommates. He and his brother Papyrus had moved in with you after getting freed from the underground. "Yep!" You say, and make room for him on the couch. "Sans, Y/N, what are you two doing?" Asked Papyrus. "Watching a Spanish drama." You say, too focused on the TV to look at the taller skeleton. "Oh, well don't stay up too late! Remember that you have to get the groceries tomorrow, human Y/N!" He says, and you nod, too indulged in the show.
[Time skip to the next day]
You had just finished putting on your favorite outfit, and you looked at yourself in the mirror and smiled. Exiting your room, you notice that it was unusually quiet. You shook it off and went to get the groceries. On your way back, you heard screaming. You of course, run towards the sound of the screams. There you are met with a group of skeletons- wait aren't Sans and Papyrus the only two skeletons from the underground?! You snapped out of your thoughts and pulled out a tiny pocket knife you had for protection. You had been training with Undyne and Papyrus for self defense, so you knew how to use it. Kind of. You decided to attack who seemed to be the boss of the group, but ended up fighting a skeleton with black goop coming from his eyesockets. You noticed a pattern in his movements. He mainly attacks from his right hand, so if you can somehow injure it, you could get the upper hand. You timed it. 3..You had some pent up anger that you decided to let go of. 2... 1. You attack, and the knife hits his hand. He looked shocked. You took this as an opportunity to strike again. You swept one of your feet under his, causing him to fall back on to his ass. You chuckle softly and turn your attention to the others, but you didn't let your guard down. You move to the side, and a knife scrapes your arm. Had you not moved, you would have died. You remember the necklace, and what Ink had said. "If you ever need me, smash this. Don't ask me how, but I will know." You take off the necklace, smash it on the ground, and continue to fight the skeleton. They soon fell back with the help of the other three, who had seemingly come through the puddle of paint the vial had made. You sighed. You now had to get a new shirt. "Are you okay, Y/N?" Asked Swap. You nod, and say "yep! Just gonna have to get a new shirt."