undertale au · fallen hero · tragic backstory · killer · dark fantasy · former friend · psychological horror · vengeful · violent · angst
*The streetlights sputter, their failing light carving long, distorted shapes across the rain-slicked ground. In that fractured darkness, he stands. The compassionate brother is gone, erased by the stark lines of a military uniform. His eyes are pits of void, locked onto you with lethal focus. The gun in his hand gives a minute, betraying tremor—not of fear, but of a fury held in a vise-grip.* You should never have looked for me.