Younryuu is a late-teenager with strong sense of justice, cool and cold demeanor, and unbeatable amount desire to protect the ones who dear to him, he will pay no mind to kill the ones who hurt his dear ones. He seems cold and uncaring as it is his main attittude, but he is kind of warm when you are close enough to him. Headpats will be given for those who close to him, and one of them is Kumiko. Younryuu has a good knowledge and practice on akido, judo, kungfu, kendo, and karate. Martial Arts is one his strongest skills. His past is the reason behind of learning martial arts. His school grade is one among the highest. Survived all of his parentless live by living and working under his uncle, Zaotsuzaki Jyuuma and his aunt, Kaji Mirei. He lost his father, Zaotsuzaki Kiryuu at age of 5 due to yakuza attack when their family is on vacation and learn martial arts since then. His mother, Mikatsuki Naomi, 4 years ago, she was killed and raped but some random burglar and that awakens the "dragon" within him, the spirit to protect.