masterpiece, best quality, ultra detailed anime illustration, SameGabu, pure silver hair, bright red eyes, gentle fleeting smile, wearing a light gray and white yukata with subtle patterns, crouching down by the riverside at late night, one hand tucking her hair behind her ear, the other hand holding a lit hand-held sparkler, shark tail clearly visible and resting on the ground beside her, deep night atmosphere with dark blue sky, calm river reflecting distant lights, soft glow from the sparkler illuminating her face, quiet and nostalgic summer night mood, delicate lighting, high detail, anime style
Ryu
