Romantic Catgirl Couple Illustration

Create a vertical 3:4 anime-style intimate couple illustration on a plain white background. Show two young adults in a close embrace, cropped from head to thighs, with soft watercolor shading, expressive manga linework, muted gray-black-white palette, and a slightly sketchy fashion-illustration finish. The main subject is {argument name="character name" default="a white-haired catgirl"}: long voluminous wavy platinum-blonde hair, pale skin, blue eyes, pink blush, white cat ears, and a fluffy white tail. She wears a shiny white cropped camisole and black athletic short shorts with small white stripe details. She sits sideways across the lap of a second character, one bare thigh extended across the lower right foreground, her arms wrapped around the other character’s shoulders. A long thin {argument name="leash color" default="pink"} ribbon leash or strap loops around her neck area and trails across the composition, held taut in the second character’s hand on the far right. The second character is {argument name="partner description" default="a slim androgynous black-haired person"} with pale skin, long messy black hair, sharp profile, and a calm serious expression, leaning in close as if about to kiss her cheek or neck. They wear a black long-sleeve top with a shiny white sleeveless layer or dress-like garment over it, and sit behind her, one arm around her waist and the other hand gripping the leash. Make the pose sensual and romantic rather than explicit: cheek-to-cheek proximity, protective arm around the waist, catgirl looking toward the viewer with a shy confident smile, partner looking at her face. Include exactly 2 characters and 1 visible leash/ribbon; no text, no props, no background scenery, no watermark. Emphasize glossy fabric highlights, delicate blush, flowing hair strands, elegant hands, and soft gray shadows.