furayu (flayu), numeri (pixiv), kaga ai, sayonara zetsubou sensei, non-web source, 00s, 1girl, arm support, black socks, breasts, brown eyes, brown hair, collarbone, crab, female focus, foreshortening, frown, gradient background, gym uniform, kneehighs, legs together, long hair, looking at viewer, looking up, low ponytail, mole, mole under eye, ponytail, shirt, shoes, short sleeves, sitting, small breasts, sneakers, socks, solo, thighs, white shirt, white shoes, yokozuwari