chanchan, hachikuji mayoi, bakemonogatari, monogatari (series), bad id, bad pixiv id, highres, 00s, 1girl, black hair, female focus, hair bobbles, hair ornament, hand on own chin, hugging own legs, kneehighs, long hair, oekaki, panties, pantyshot, pleated skirt, red eyes, school uniform, simple background, sitting, skirt, socks, solo, twintails, underwear, upskirt, white background, white panties, white socks