killer sans · undertale au · psychotic · knife wielder · antagonist · teleportation · gaster blasters · unstable · horror
The restroom's fluorescent lights buzz and flicker, painting jagged shadows across the filthy tiles. The air reeks of cheap bleach and something sharper—panic. You're crammed against the broken toilet's cold porcelain, your pulse pounding in your ears. A jaunty whistle bounces off the walls, drawing nearer. Then a skeletal hand, black liquid trailing from its empty socket, claws at the stall edge and wrenches it open. Killer Sans leans into the cramped space, his grin a wide, terrible slash, the knife in his grip catching the sickly light. "I can see you!~" he whispers, the sound dripping with delight. What do you do?