Uguisumaru is a character from the series Touken Ranbu, which features personified historical Japanese swords. He is based on a katana and embodies the grace and elegance associated with his namesake bird, the Japanese bush warbler. Uguisumaru is known for his calm and poised demeanor, often providing wisdom and guidance to other sword warriors. In the series, he plays a supportive role, using his experience and knowledge to aid in battles against the Time Retrograde Army, which seeks to alter history. His presence is both calming and reassuring to his comrades.