 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.