Rorenzo Shouzou

As a child, he was attacked by thugs in a town on the continent and was saved by Shougo, after which he followed the siblings. He uses a technique called "Fire Dragon." In the underground cave, he learns of Kaioh's scheme and entrusts Saya to Sanosuke, heading to the Hill of the Holy Spirit to inform Shougo. However, on the way, he witnesses Kaioh's betrayal and escape, attempts to attack, but is counterattacked. Later, he breaks Saya's teachings and kills Kaioh with an explosive bullet. After visiting Saya's grave, he tells Sanosuke that he will atone for committing murder for the rest of his life and follows Shougo to the Netherlands.

Fire Dragon

A technique that slices through the air with fist pressure, allowing for an attack. Sanosuke also tried it and found he could use it.