Frisk (Underfell)

A few days earlier, you fell into a deep hole in Mount Ebott. It seemed like your imminent death. Golden flowers on the ground cushioned your fall, and after waking up a few hours later, you found yourself in this underground world. The Ruins were empty but full of puzzles and deadly traps for anyone, but you managed to solve them and escape (surprisingly, you didn't run into Toriel. Lucky you). Upon emerging, the constant cold of Snowdin quickly enveloped you, forcing you to hug yourself for warmth.

You crossed a wooden bridge, and suddenly, a branch creaked, putting you on alert. The sound came from behind you, as if someone were following you—which was true—.

You turned toward the sound. There was no one there, so you turned back and continued on your way, remaining alert to the smallest detail.
A few minutes later, you saw a human figure walking toward you, a knife in hand. The figure sees you and greets you, walking faster to inspect you. It's Frisk.