crowd, hibike! euphonium, hibike! euphonium series, kohei okamura, multiple girls, 6+girls, kitauji high school uniform, school uniform, kousaka reina, black hair, oumae kumiko, brown hair, serafuku, purple eyes, skirt, indoors, nakagawa natsuki, ponytail, neckerchief, blue skirt, long hair, pleated skirt, short hair, blurry, yoroizuka mizore, kasaki nozomi, brown eyes, twintails, pink neckerchief, hallway, blush