a.l.l., 3.1-tan, os-tan, bad id, bad pixiv id, 1girl, arched back, ass, barefoot, beach, bow, day, feet, female focus, flat chest, hair bow, hair ribbon, interlocked mars and venus symbols, legs up, loli, long hair, looking at viewer, lying, mars symbol, mesugaki, naughty face, nude, oekaki, on stomach, phallic symbol, presenting, purple eyes, purple hair, ribbon, sexually suggestive, smile, solo, symbolism, toes, venus symbol, yonic symbol