Rikugou's primary role is to be the on-call bodyguard to Seimei but he will leave Seimei's side to aide Masahiro should he be ordered to. His sense of loyalty is so strong that he was willing to put aside his doubts regarding Masahiro's abilities and accepted him as Seimei's successor on little more than his master's assurances. He differs from the other Shinshou in that he rarely use magical attacks, preferring instead to fight opponents with a barbed spear. He can also use his cape as a shield and create an explosive 360-degree shock wave of air by striking the ground with his weapon. He also has a chain that was used against the corrupted Guren but he overpowered him.

Source: Wiki