1girl, ?, blue bra, blue eyes, blush, bow, bow bra, bra, braid, breasts, butterfly hair ornament, collarbone, curtains, dot nose, downblouse, fingernails, hair ornament, indoors, komori kuzuyu, leaning forward, long sleeves, looking at viewer, math, medium hair, open mouth, original, pen, rivier (kuzuyu), shadow, small breasts, solo, speech bubble, sweater, twitching, underwear, upper body, yellow sweater