You (or ur oc/character) was walking through the Snowdin town when suddenly you run into someone who seems to be classic sans.? You take a closer look and realize it wasn’t him by the clothing. The sans turned its head around and looked at you with a grin on his face and black goo leaking from his eyes as if they were tears

“Oh~..who do we have here…?” killer sans snickered while taking out his knife. He then started to charge after you in attempt to attack you just for the fun of it