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2girls, twin, ponytail, eye contact, light smile, shared bathing in large Japanese open-air hot spring, collarbone, dark blue eyes, dark red eyes, black hairband, wet hair, open air, Soothing, relaxing, refreshing, comfortable, sleepy, break, (Japanese hot springs magazine No.12 cover):1.3, (8k, RAW photo, highest quality, masterpiec):1.2, (Realistic, photorealistic):1.4, (Highly detailed 8k wallpaper):1.4,