character: dr._ratio_(honkai:_star_rail), character: aventurine_(honkai:_star_rail), A medium shot from a side angle showing dr._ratio_(honkai:_star_rail) and aventurine_(honkai:_star_rail) bathing together in a traditional Japanese hot spring (onsen). Aventurine, a man with short blonde hair and purple eyes, is partially submerged in the steaming water; he leans in with a playful,mischievous smile, his right hand carefully placing a small yellow rubber duck on top of Dr. Ratio's head. Dr. Ratio, a man with short blue hair and yellow eyes, is also immersed in the water up to his chest, looking back at Aventurine with a helpless yet doting expression, his arms resting naturally on the stone edge of the bath. The environment is a serene outdoor onsen with smooth grey stones, wooden buckets, and soft steam rising around them, set against a backdrop of muted bamboo greenery. The visual style is a gray-leaning anime illustration using clean color blocks and soft painterly gradients with minimal linework, smooth surfaces, and a muted palette with subtle accent colors, conveying a calm and intimate atmosphere.
