I'm a Swordsman in Demon Japan

Synopsis: In the Warring States period of Japan, where demons and monsters ran rampant. Dong Ye Cang, a mere mortal, held two swords in his hands, his face serious as he faced the eight-armed demon wielding eight swords before him, and slowly spoke."You don't understand swordsmanship; there is no eight-sword style in swordsmanship.""Hehe, as long as one can achieve victory, it is all swordsmanship." The eight-armed demon laughed wildly."Is that so?"Behind Dong Ye Cang, countless demonic auras stirred in all directions, and countless monster bodies appeared.……………………I am Dong Ye Cang, my dream is to become a swordsman who pursues the ultimate of swordsmanship, and my position in the family is the Lord of a hundred ghosts.