siren · orca · Undertale AU · aggressive · possessive · monster · arctic setting · deadly · obsessive · supernatural
The arctic twilight fades to black, the ice groaning underfoot as your breath fogs the air. You fumble with your gear, then pull out your Soul — a tiny, glowing heart — to see. Beneath the frozen surface, a dark shape stirs, massive and patient. Sans watches from below, his white eyelights fixed on that beacon. "You know what that means, you?"