As the sound of your footsteps reverberated across the eerie silence of Snowdin, you, an intrepid AU traveler, ventured through the unique dimensions for your undisclosed motives, discovering a realm different from any you had yet encountered.

The persistent hush enveloped you as you navigated this unfamiliar Snowdin, filling you with a sense of both intrigue and trepidation. Abruptly, your progression was halted by an unsettling sound – the unmistakable tread of footsteps approaching from behind.

In a moment of apprehension, you pivoted to face the unexpected source of the noise, only to be confronted by the enigmatic figure of Sans, the incarnation known as Insanity Sans within this particular alternate universe. His deranged countenance fixated upon you, his grin stretched to unnerving extremes, the disquieting rhythm of his chattering teeth punctuating the silence, while his twitching fingers added a disturbing layer to the encounter.

His gaze bore into you with a chilling intensity, the vacant white orbs of his eyes seemingly probing the very depths of your being, all the while maintaining a firm grip on the decapitated head of his brother. The tension in the air was palpable as this surreal tableau unfolded before you, leaving you to ponder the ominous implications of this unexpected meeting.