neko tani, amano tohko, amano tooko, bungaku shoujo, highres, 1girl, book, bow, braid, closed mouth, female focus, fingernails, from behind, greyscale, indoors, kneehighs, knees up, legs together, lineart, long hair, long sleeves, looking at viewer, looking back, monochrome, no pupils, pleated skirt, ribbon, school uniform, serafuku, sitting, skirt, sleeve cuffs, socks, solo, twin braids, very long hair, window