2girls, arm_up, black_hair, blue_hair, blue_neckwear, blue_sailor_collar, blue_skirt, blush, classroom, closed_eyes, closed_mouth, curtains, door, fish_tank, flute, head_tilt, holding, holding_instrument, indoors, instrument, kitauji_high_school_uniform, long_hair, multiple_girls, music_stand, neckerchief, open_mouth, pleated_skirt, sailor_collar, school, school_uniform, serafuku, shirt, short_sleeves, skirt, smile, standing, watch, waving, white_shirt, window