A medium shot from a low-angle perspective captures a colossal, singular great serpent lurking within the depths of a dark, stagnant forest. The creature possesses a draconic appearance with rugged, coarse scales and a single prominent horn protruding from its head. Thick, black gaseous mist overflows from its open maw and seeps faintly from its entire body like a toxic miasma. The serpent's massive body coils through the dense undergrowth, its imposing presence dominating the center of the frame. The environment is a suffocating, oppressive woodland filled with twisted, blackened trees and a heavy, murky atmosphere. The lighting is dim and moody, with a dark color palette dominated by deep blacks and charcoal greys, emphasizing a sinister and mysterious mood. The visual style is a high-quality anime illustration with sharp details on the scale textures and fluid, ethereal effects for the drifting black gas.