crowd, hibike! euphonium, hibike! euphonium series, kohei okamura, multiple girls, kitauji high school uniform, school uniform, 6+girls, serafuku, kousaka reina, brown hair, purple eyes, black hair, oumae kumiko, long hair, blurry, blush, indoors, nakagawa natsuki, neckerchief, skirt, looking at viewer, green neckerchief, blue skirt, pleated skirt, blurry background, ponytail, sailor collar, short hair, depth of field, short sleeves, white shirt, shirt