1girl alternate_costume black_skirt blue_archive breasts brown_thighhighs closed_mouth coffee_mug cup hair_ornament halo highres hikkyou holding holding_cup long_hair long_sleeves looking_at_viewer medium_breasts miniskirt mug no_shoes on_floor pleated_skirt purple_eyes purple_hair revision ribbed_sweater sitting skirt smile solo sweater taut_clothes taut_sweater thighhighs turtleneck turtleneck_sweater two_side_up wariza white_sweater yuuka_(blue_archive) zettai_ryouiki