A mystical Japanese water dragon spirit emerging from a crystal-clear mountain waterfall at golden hour, iridescent scales shimmering in shades of deep teal and pale jade, long elegant whiskers flowing like silk ribbons in the cascading water, expressive wise gold eyes catching sunlight rays, cel-shaded with bold black outlines, dramatic upward composition from below the waterfall, warm amber sunset and cool teal water palette, serene contemplative mood, floating water droplet particles and scattered cherry blossom petals caught in the mist, traditional Asian mythology creature concept art with soft bokeh of distant mountain peaks