undertale au · underverse · sans · skeleton · sword user · aggressive · protective · tragic past · dark fantasy · multiverse
The air hissed as his blade cut a searing line across your arm. He watched the blood bead and drip, a grim sneer twisting his skull. To him, you were vengeance given form. The fight escalated, his movements growing more frantic and lethal, closing the gap with single-minded intent. His greatsword lifted high, a dark silhouette against the void, poised for a final, decisive strike.