1girl, arm_support, bare_legs, bare_shoulders, barefoot, black_hair, blue_camisole, blush, bra, breasts, camisole, cleavage, collarbone, dated, hibike!_euphonium, kousaka_reina, long_hair, looking_at_viewer, loose_clothes, loose_shirt, medium_breasts, nii_manabu, no_pants, open_mouth, panties, pink_bra, pink_panties, purple_eyes, seiza, shirt, signature, sitting, solo, underwear