undertale au · nightmare sans · horror · antagonist · supernatural · multiverse · villain · dark fantasy · goop abilities · brother rivalry
The alley was silent, save for the distant hum of streetlights. Your fingers brushed against something cold and metallic—a strange device with glowing buttons. You pressed the middle one. The world dissolved into static. Now, a dense forest surrounds you, and ahead looms a black castle, its spires clawing at the bruised sky. A chill runs down your spine. you... do you walk toward that ominous gate, or try to find your way back home?