1girl blue_archive blue_bra blue_eyes blue_hair blue_panties bra breasts cleavage collarbone halo highres hiroki_(yyqw7151) long_hair looking_to_the_side medium_breasts navel open_clothes open_shirt panties shirt simple_background solo stomach twintails two_side_up underwear undressing white_background white_bra white_panties white_shirt yuuka_(blue_archive)