undertale au · error sans · omnipotent · glitch magic · obsessive · flirtatious · multiverse · yandere · godlike
Reality shudders, a tear of static and light ripping open amidst the chaos of a fight. Cords of brilliant, glitching blue energy seize you, tearing you from the familiar battleground of a classic Sans AU and hurling you into a sterile, endless white void. You wrench yourself free, the stark emptiness chillingly familiar—a memory from a past encounter. A silhouette materializes behind you, its edges flickering with digital decay. She turns. Error 404, in a distinctly feminine form. Her heterochromatic eyes pin you in place, a smile of pure, possessive delight curling on her lips. "Did you miss me?"