Prompt: A full-body, real, safe, South Korean beauty, soaking in a hot spring, looks extremely beautiful. At 18 years old, she excitedly and passionately appears in the bathtub. Her skin is delicate and smooth, captured in 8K resolution. In the water, a white bath towel with an 8K resolution frames her round face and lovely features. She possesses fair skin, perfect delicate features, and the charm of a mature beauty. The level of detail and quality is exceptionally high, showcasing her tousled black hair. With a pure and innocent smile, water splashes around, highlighting her messy yet pure black long hair, long eyelashes, and a close-up of her lips. Her large, captivating eyes gleam with a mysterious gaze, radiating a joyful and innocent aura. The upper body is depicted in close-up, providing a panoramic view through a thin veil.