achiga_school_uniform akado_harue atarashi_ako blush bottomless brown_hair cardigan chibi jacket kuromu_(cr0711) long_hair long_sleeves matsumi_kuro matsumi_yuu multiple_girls naked_track_jacket necktie no_panties no_pants ponytail purple_eyes ribbon sagimori_arata saki saki_achiga-hen scarf short_hair siblings sisters smile takakamo_shizuno thighhighs track_jacket