Sengo Muramasa is a character from the anime and game series Touken Ranbu, which features historical Japanese swords personified as warriors. As one of the many sword warriors, or 'Touken Danshi', Sengo Muramasa is characterized by his calm demeanor and mysterious aura. He is known for his unique and somewhat eccentric personality, often making cryptic remarks. In the series, he plays a role in guiding newer sword warriors and providing strategic insights during battles. His character design and storyline draw inspiration from the legendary swordsmith Muramasa, adding depth and intrigue to his narrative in the series.