1girl, aoi akua, ass, bangs, bath, bathroom, bathtub, blue eyes, blue headwear, blush, breasts, completely nude, from behind, holding, holding shower head, indoors, kaguya-sama wa kokurasetai ~tensai-tachi no renai zunousen~, long hair, looking to the side, medium breasts, mirror, nipples, nude, open mouth, rubber duck, shirogane kei, shower head, soap bottle, soap bubbles, squatting, water, white hair