1girl, arm_behind_head, arm_up, bare_arms, bare_legs, bare_shoulders, barefoot, black_hair, blue_one-piece_swimsuit, blurry, blurry_background, blush, breasts, brown_eyes, depth_of_field, feet_out_of_frame, indoors, looking_at_viewer, matsunaga_kouyou, nose_blush, one-piece_swimsuit, original, parted_lips, sitting, small_breasts, solo, spread_legs, swimsuit