Chase Yates is Sword Lord Decagon, who defeated the eight Northern Liao Yama Enforcers. He hid his identity to avenge his mother. After the Northern Liao prince was captured, the Yama Enforcers planned a prison break. When the Fourth Yama Enforcer broke into The Imperial Constabulary, Chase Yates stopped hiding, killed the opponent and exposed his identity. He foiled the Yama Enforcers' conspiracies, and faced off against the Blood Blade Grand National Teacher.