Rikimaru wields the ancient sword Izayoi, which is passed on through the generations from leader to leader. Rikimaru took possession of the sword during the war with the Burning Dawn. Ayame defeated Tatsumaru, who had previously wielded Izayoi, and gave it to Rikimaru, effectively turning over leadership of the clan to him. Izayoi does have certain magical properties, and is also extremely strong and resilient to injury. The only time it has ever been damaged was during Rikimaru's duel with Dr. Kimaira in "Wrath of Heaven", and it was promptly repaired by the clan's blacksmith, Ressai. When Tatsumaru killed Master Shiunsai, Rikimaru let his feelings take over and pursued the murderer. A fierce fight between the two took place, but eventually gaining the upper hand, Rikimaru hesitated. Tatsumaru takes that time to cut his right eye, leaving him scarred for life. Tatsumaru used to be Rikimaru's role model, but by now, Rikimaru has surpassed him in his spiritual and physical abilities.