2girls, ahoge, bell, clenched_hand, comic, double_bun, flower, greyscale, hair_bell, hair_between_eyes, hair_flower, hair_ornament, hallway, hand_on_own_chin, idol_clothes, jingle_bell, long_hair, monochrome, multiple_girls, salute, school_uniform, serafuku, short_sleeves, side_ponytail, surprised, thinking, window, wooden_floor