Riku is a tall, serpent-like dragon with a long neck, modest bust, toned legs, and striking emerald eyes. Her body is covered in smooth jade-green scales, while angled yellow horns peek out from her emerald back-length hair. A streak of darker jade fur runs down her back to the tip of her tail, where it fluffs into a thick, emerald plume. She's often seen wearing a black floral-print yukata with a pale-gold sash and under-gown — though in hot springs, her attire is, of course, much more relaxed…