パンチラ・雑巾がけ・四つん這い　panty shot, mopping, on all fours

Solo, 1girl, on all fours, buttocks, camel toe, thighs, one side up, panties, "white panties", underwear, shiny skin, from behind, glossy, mopping, (uniform, skirt, sailor suit, socks, pleated skirt, shoes, brown shoes, sailor collar, white shirt, shirt, long sleeves, sagging socks,), "classroom, indoors, desk, blackboard, wooden floor, multiple boys, school desks,",