3girls akaki_aoyama akamatsu_yui animated aoyama_kotoha_(mitsuboshi_colors) blonde_hair blue_background blue_dress blue_hair brown_hair commentary_request dress grey_shirt hands_up kise_saki long_hair looking_at_viewer mitsuboshi_colors multiple_girls pleated_skirt red_background red_shirt shirt short_hair short_sleeves simple_background skirt star_(symbol) triangle trigonometry ugoira yellow_background yellow_dress
3girls blonde_hair blue_background blue_dress blue_hair brown_hair dress grey_shirt hands_up long_hair looking_at_viewer multiple_girls pleated_skirt red_background red_shirt shirt short_hair short_sleeves simple_background skirt star_(symbol) triangle trigonometry yellow_background yellow_dress
akamatsu_yui aoyama_kotoha_(mitsuboshi_colors) kise_saki
mitsuboshi_colors
animated commentary_request ugoira