Ittosai Ito is a skilled and enigmatic swordsman featured in the anime series Sengoku Bushouki MURAMASA. Known for his unmatched swordsmanship and mysterious aura, Ittosai is a wanderer who seeks worthy opponents to hone his skills. Despite his cold demeanor, he is guided by a strong sense of honor and respects those with true strength and determination. In the series, Ittosai plays a critical role as both an antagonist and a mentor, challenging the protagonist to grow and evolve in their martial prowess and understanding of the warrior's path.