1990s_(style), 1girl, akkasayu, ass, black_hair, breasts, cleavage, closed_mouth, covered_navel, cropped_legs, hair_bun, hand_on_own_thigh, large_breasts, long_hair, looking_up, one-piece_swimsuit, one_eye_closed, original, red_one-piece_swimsuit, retro_artstyle, sayuri_(akkasayu), solo, swimsuit, thick_thighs, thighs, very_long_hair, white_background, yellow_eyes