A medium shot from a three-quarter view captures a mature Japanese big sister character with very short black hair, sharp upward-slanting eyes, fair skin, and a confident expression, standing with legs slightly apart and arms crossed under her C-cup bust. She wears a crisp white blouse with black necktie tucked in, a long black tailored vest reaching her hips, tight black leather short pants hugging her thighs, sheer black knee-high socks, and polished black lace-up short boots with intricate stitching and buckles on her feet; her hands grip her elbows firmly. The simple plain background emphasizes her poised figure. Anime illustration style with great quality, best quality details in fabric textures like the glossy leather sheen, fine weave of the blouse, subtle lace patterns on boots, sharp linework, vibrant yet balanced color palette, soft studio lighting with subtle highlights on edges, clean and professional atmosphere.