Set in Edo, ruled by Okitsugu Tanuma, a unique swordsman called "Toryu" slashes, slashes, and slashes evil!! Its true identity is that it usually lives in a storehouse, but in fact it is an illegitimate son of the Tokugawa family who escaped from Tanuma's hand!! Armed with the secret sword "Ten no Ikkaku" made from an unseen stone, he fights to the death against assassins from Tanuma!! It's an orthodox period drama backed by a solid worldview, and it's an unprecedented action-packed work! ! In order to escape from an evil ruler, he bears the fate of being forced to live on a road where the sun doesn't shine!