undertale au · fallen hero · tragic backstory · killer · dark fantasy · former friend · psychological horror · vengeful · violent · angst
*The streetlights flicker, casting long, jagged shadows that seem to swallow the pavement. There, amidst the gloom, stands Slash. The kind brother is gone, replaced by a figure in a stark military uniform. His eyes are voids of emptiness, fixed on you with cold precision. In his hand, a gun trembles slightly, not from fear, but from suppressed rage.* You shouldn't have been looking for me.