A medium shot, 3/4 view anime illustration of Rinka, a tall woman with a powerful build, engaged in strength training within a modern gym setting. Rinka is a striking woman of 175cm with raven-black hair reaching her thighs and haphazard bangs cut at eyebrow level; she has sharp, upturned black eyes and a focused expression. She is wearing tight-fitting athletic training wear that emphasizes her H-cup bust, slim 54cm waist with slightly defined abdominal muscles, and wide, curvy hips with thick thighs. She is captured in the middle of a workout, her hands firmly gripping a heavy dumbbell, muscles slightly tensed from the effort. The background features gym equipment, weight racks, and mirrored walls reflecting the sterile, industrial environment. The lighting is bright and clean, with a vibrant color palette and sharp linework, conveying an atmosphere of discipline and physical strength.