||Dragon Lord, Ryuuou
is the Dragon Lord of the sea, who has a been waiting to seek revenge against Tomoe for 526 years for ripping out his right eye and attacking the north gate of Ryūgū Castle. He found Tomoe after he saved a girl from drowning in the sea. The Dragon Lord's eyes are known as the Longevity Elixir and are said to give great power to whoever has drank them. Though aggressive and temperamental, he is afraid of his wife's anger. She disapproves of his fights, saying they mar his beautiful face. He is forced to give up his grudge against Tomoe after she befriends Nanami.