1girl black_hair black_sailor_collar black_serafuku black_skirt blush chair closed_mouth commentary_request desk hair_ornament hairclip highres indoors long_hair long_sleeves neckerchief night nose_blush original pentagon_(railgun_ky1206) pleated_skirt red_ribbon ribbon sailor_collar school_chair school_desk school_uniform serafuku skirt smile solo standing translation_request violet_eyes white_neckwear window x_hair_ornament