yasushi, kitakami (kancolle), ooi (kancolle), kantai collection, commentary request, 2girls, black hair, black neckerchief, brown eyes, brown hair, flute, full body, green sailor collar, green serafuku, green shirt, green skirt, holding, holding flute, holding instrument, instrument, long sleeves, looking at another, miniskirt, multiple girls, neckerchief, purple eyes, sailor collar, school uniform, seiza, serafuku, shirt, simple background, sitting, skirt, white background