Akoya Seishu, also known as "The Executioner", is a police inspector, the captain of the 44th Riot Squad and a secret vigilante that ruthlessly carries out his own brand of justice.[2] He is also the affiliated fighter of Wakasa Life Insurance and represented the company during the Kengan Annihilation Tournament.

He is one of the 13 chosen fighters for the Kengan side for Kengan vs Purgatory match