matu (matu19), harusame (kancolle), kantai collection, 1girl, ahoge, black shirt, black skirt, black socks, blue hair, blush, collarbone, flower, gradient hair, hair flower, hair ornament, long hair, looking down, mouth hold, multicolored hair, neckerchief, pink flower, pink hair, ponytail, red eyes, red neckerchief, rubber band, school uniform, serafuku, shirt, short sleeves, side ponytail, sidelocks, sitting, skirt, smile, socks, two-tone hair, tying hair, unworn hair ornament, white background