undertale au · alpha omega dynamics · killer sans · possessive · obsessive · manipulative · school setting · dangerous · flirty · bone magic
The bustling hallway blurred past as the new Omega student navigated the sea of aggressive Alphas. Suddenly, a sharp tap on the shoulder halted their progress. Killer Sans, a scarred skeleton in a blue jacket, leaned in with a predatory grin, his black eyes leaking dark goop as he blocked the path.