4girls, ahoge, barefoot, black_hair, blush, bra, breasts, brown_eyes, brown_hair, curly_hair, feet, green_bra, green_panties, hibike!_euphonium, indoors, kousaka_reina, large_breasts, legs, long_hair, multiple_girls, nakagawa_natsuki, navel, open_mouth, oumae_kumiko, panties, panty_pull, pink_panties, ponytail, purple_eyes, ribbon, sbel02, short_hair, stomach, thong, toenails, toes, underwear, underwear_only, undressing, unworn_panties, white_bra, white_panties, yellow_bra, yellow_panties, yellow_ribbon, yoshikawa_yuuko