1girl, barefoot, bean_bag_chair, blush, breasts, brown_eyes, brown_hair, cleavage, covered_navel, hand_on_own_thigh, legs, long_hair, long_legs, looking_at_viewer, lying, medium_breasts, on_back, one-piece_swimsuit, open_mouth, pillow, school_swimsuit, solo, strap_slip, swimsuit