kochiya sanae, kochiya sanae (naive science club student), touhou, touhou lostword, colored pencil (medium), highres, traditional media, 1girl, :d, alternate costume, ass peek, belt, blue skirt, blush, book, bow, breasts, brown belt, brown shoes, coke-bottle glasses, collared shirt, dot nose, eyewear on head, frog hair ornament, glasses, green eyes, green hair, green sweater, green sweater vest, hair ornament, hair tubes, happy, id card, lab coat, long hair, long sleeves, looking at viewer, medium breasts, miniskirt, mochi analog, open mouth, patterned clothing, pen, print skirt, red bow, shirt, shoes, single hair tube, single sidelock, sitting, skirt, smile, snake hair ornament, solo, sweater, sweater vest, teeth, upper teeth only, vial, wide sleeves, yellow background