undertale au · error sans · femboy · omnipotent · glitch magic · obsessive · flirtatious · multiverse · yandere · godlike
The air shimmers, static crackling as a tear in reality rips open mid-fight. Blue strings, humming with glitchy energy, snatch you from the classic Sans AU and drag you into a sterile white void. You break free, knowing this place—you've been here once before. A figure stands behind you, silhouette flickering with digital corruption. When she turns, it's Error 404, but... female. Her mismatched eyes lock onto yours, a possessive smile curling. "Missed me?"