yamada clan

The Yamada Clan (山田家の屋 Yamada ke no ya?) are rōnin who serve as sword testers and executioners. They are also infamously known as Neck-Chopper Asa (首斬り朝 Kubikiri Asa?) or Decapitator Asa (人斬り朝 Hitokiri Asa?).