masterpiece, best quality, amazing quality, totonoi ryouko, hana ha saku syura no gotoku, black hair, short hair, (brown eyes:0), over-rim eyewear, school uniform, grey skirt, grey vest, collared shirt, long sleeves, blue ribbon, black socks, 1girl, cowboy shot, breast focus, sitting, wariza, on floor, indoors, school, classroom, smile, clenched teeth, arched back, hand up, open hand, covering own eyes, arm behind back, arm support, legs apart, skirt aside, thighs