1girl, arm_up, ass, barefoot, bed, bedroom, black_camisole, black_panties, breasts, brown_hair, camisole, from_side, full_body, hibike!_euphonium, legs, on_bed, oumae_kumiko, panties, pillow, sbel02, seiza, sitting, small_breasts, solo, strap_slip, thighs, thong, underwear, yellow_eyes