A beautiful young Thai woman, 18-20 years old, long hair, breasts size 38

a beautiful young Thai woman, 18-20 years old, long hair, breasts size 38, lying on her back in an onsen hot spring, towel covering her body, serene expression, extremely detailed face and eyes, delicate facial features, flawless skin, gorgeous lighting, natural colors, detailed water ripples, steam rising, peaceful atmosphere, photorealistic, 8k, high resolution, masterpiece