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