1boy 1girl black_eyes black_hair commentary_request cosplay darker_than_black emiya_kiritsugu fate/zero fate_(series) hei_(darker_than_black) hei_(darker_than_black)_(cosplay) irisviel_von_einzbern long_hair mask ng7u6t red_eyes white_hair yin_(darker_than_black) yin_(darker_than_black)_(cosplay)