Though orphaned from a young age, both Ryuza and his elder brother held unique powers. Ryuza could control lightning, while his brother could manipulate water. However, Ryuza's brother died at the hands of the royal knights, for they had become wary of his skill. Ryuza swore to claim vengeance upon those who had robbed him of his only remaining family. His cruel childhood meant that he had no qualms about shedding blood for the sake of his brother. A tempest mercilessly raged around him, as if in response to Ryuza's rage, or perhaps due to his slain brother's curse.
Ryuza is a place with a very small population in the state/region of Parnumaa, Estonia which is located in the continent/region of Europe. See Wikipedia
It could also mean Hikari Ryuza Bujutsu which is a type of martial arts. In modern usage, bujutsu, meaning martial/military art/science, is typified by its practical application of technique to real-world or battlefield situations. It may be difficult to delineate the differences between budō and bujutsu. Sometimes, the differences are considered historical; others cite differences in training methods, training philosophy, or emphasis on spiritual development.
In modern usage, bujutsu, meaning martial/military art/science, is typified by its practical application of technique to real-world or battlefield situations. Budō, meaning martial way, has a more philosophical emphasis.