Also known as: 亜左桐馬, 桐馬(地獄楽)
Aza Touma is the younger brother of Aza Choubei. After his brother was arrested, Touma infiltrated the Yamada Clan in order to reunite with his brother in prison. After Choubei accepts a mission to retrieve the Elixir of Life from an island for the shogun, in exchange for the pardon, Touma acted as his executioner monitor.