(masterpiece, best quality, minimalist sumi-e illustration, clean ink brush strokes, limited detail, wide negative space), a lone swordsman in simple silhouette form, standing or frozen mid-slash, black ink character with flowing ponytail and kimono shapes suggested by minimal curved strokes, the only color: a single vivid slash arc trailing from the katana — glowing in red, blue, and gold, abstract background: faint bamboo outlines or soft ink gradients fading into white space, composition: large empty margins, strong contrast between black figure and colorful slash, flat paper texture effect, no shadows, no excessive detail, atmosphere: poetic, symbolic, quiet power, elegant restraint,