1girl, black_bra, black_hair, bottomless, bra, bra_peek, clothes_in_mouth, clothes_lift, groin, hand_in_own_hair, hibike!_euphonium, kousaka_reina, lifted_by_self, long_hair, long_sleeves, mouth_hold, navel, nii_manabu, purple_eyes, purple_shirt, purple_sweater, shirt, shirt_in_mouth, shirt_lift, signature, solo, stomach, sweater, underwear, upper_body