Long Sword Unomaru/Origin

Origin
A sword which appears in the The Tale of Hōgen. According to the story, when Retired Emperor Shirakawa visited the Shinsen'en, he observed some fishermen fishing with cormorants. At this time, one particularly fine cormorant emerged from the water, clutching a long sword with a long decorative frame in its beak. The Retired Emperor remarked that this must be a precious sword with supernatural power, and he named it "Unomaru" ("u" meaning "cormorant" and "maru" is a common suffix for names of swords).