3girls, 4koma, :d, ^_^, blush, closed_eyes, comic, flying_sweatdrops, greyscale, hair_ornament, hair_ribbon, hand_to_own_mouth, heart, long_hair, monochrome, multiple_girls, open_mouth, ponytail, ribbon, sanshuu_middle_school_uniform, school_uniform, serafuku, short_hair, smile, yuri