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