1girl, ass, blue_panties, blurry, brown_hair, closed_mouth, depth_of_field, from_behind, hand_on_own_leg, hibike!_euphonium, indoors, kneehighs, looking_at_viewer, looking_back, medium_hair, neckerchief, no_pants, on_floor, oumae_kumiko, panties, pink_neckerchief, sbel02, shirt, short_sleeves, smile, socks, solo, top-down_bottom-up, underwear, white_shirt, white_socks, yellow_eyes