Black and white tattoo design of an aggressive Oni mask, featuring sharp, menacing facial features with large bull-like horns curving outward. The Oni's expression is fierce, with wide eyes and a snarling mouth. Thick, swirling smoke emerges from its open mouth, flowing around the mask and creating a dynamic background of smoke tendrils. The design is highly detailed, with intricate shading and textures in blackwork style, emphasizing the contrast between the sharp features of the mask and the soft, flowing smoke.