One of the students of True Cross Academy. He is in the same class as Rin Okumura.
Bon as a child.
Ryūji is a classmate of Rin Okumura and also his rival. He joined the True Cross Academy with the great ambition of defeating the God of Gehenna, Lord Satan ever since he was a young boy. He became determined to achieve this goal after he learned of the "Blue Night", an event that occurred prior to his birth when Satan attack the temple in which he lived and killed most of its Exorcists. His classmates usually nicknamed him as Bon.
Ryūji was created by Kazue Kato. He was appeared on the Manga, Chapter #2. In the Anime, he appeared on Episode #3. He was voiced by Kazuya Nakai.
Bon is a boy who takes appearance of a Yakuza. He has a spiky brown hair, with a yellow striped Mohawk in the middle. He also wears three earrings on each of his ears. Much like Rin Okumura, he wears his uniform in a less than sophisticated manner which goes hand in hand with his rebellious and serious nature, as well as his harsh stern look.
Bon takes his schooling very seriously, even to the point of criticizing Rin for slacking and falling asleep during class lectures. He also tends to be uptight most of the time but nonetheless, he is incredibly determined to become powerful enough to defeat Satan and rebuild his temple.