1girl, black neckerchief, blue eyes, blue hair, crop top, dated, detached sleeves, eiji (monochromexd), isuzu (kancolle), isuzu kai ni (kancolle), kantai collection, long hair, midriff, navel, neckerchief, one-hour drawing challenge, pleated skirt, red skirt, sailor collar, school uniform, serafuku, shirt, simple background, skirt, solo, twintails, upper body, white background, white sailor collar, white shirt