mekakushi (artist), natsuyasumi no choukyou, summer break training, 1girl, anus, bdsm, black hair, blue eyes, blush, bondage, bottomless, bound, bound ankles, bound arms, bound legs, bound wrists, classroom, cleft of venus, collar, desk, female focus, indoors, loli, long hair, looking at viewer, lying, nipples, no panties, on back, on desk, open clothes, open mouth, open shirt, outstretched arms, pussy, school uniform, shirt, sitting, solo, spread arms, spread legs, sweat, tape, tape bondage, uncensored