Sairento Mukui (サイレントむくい, Mukui Sairento, lit. Silent Retribution) is a young Masukage and the self-proclaimed Guardian of Akabira City, taking the title which Tyrell Nishiki held a number of years before. Sairento is a man of honor and does what he believes to be right above all else. He partners Kitsui Sanretsu, Hisako and Saikō in their hunt for Averian, following the death of Yoshiaki Hiroshi. Sairento's current location, including that of Team Sanretsu, is currently unknown.