Ryuga

Ryuga (リュウガ) is Yuria's older biological brother and Juza's older half brother. He is born under the Sirius Star, which is considered the "lone wolf" of the heavens with its bright shine. As "the Star of the Lone Celestial Wolf", his destiny is to guide the successor of Hokuto Shinken in times of chaos.

History
Before the outbreak of nuclear war, Ryuga met with Yuria before the latter travelled to the Hokuto dojo to meet with Kenshiro. After fending off an outlaw attack on his estate, Ryuga told his sister not to worry about him, as he was fully willing to accept his destiny as the "Lone Celestial Wolf". Some time later, he personally went to the Hokuto dojo to secretly appraise the candidates for the art's succession, seeing if any of them would become the savior destined to bring hope to the world. Despite being quickly found out by Toki and Raoh, Ryuga gained much insight into their natures, deciding that each would bear watching in the near future.

After the destruction of civilization, Ryuga redoubled his search for a worthy savior for the post-apocalyptic wasteland that the world had become. He travelled to the Nanto capital and participated in the civil war between the forces of Thouzer and Shew to secretly appraise the Nanto Rokuseiken masters. Eventually, however, Ryuga became convinced that the true savior of the world was either Kenshiro or Raoh, with the deciding factor essentially becoming whether the world could be saved through kindness or force.

In order to test Kenshiro's worthiness as the "messiah of the end of the century", Ryuga allied himself with Raoh as one of his chief lieutenants. He explained his motives to the conqueror as a desire to see if Raoh was worthy to lead the new age - if not, Ryuga would have to dispose of him personally and take control of the land himself. Raoh accepted Ryuga's offer, telling him that "the eyes of the wolf" would see what they needed to make their decision.

In Raoh's service, Ryuga committed several horrendous acts, including an assault on Toki, who is already heavily weakened by his illness and his last confrontation with Raoh. Ryuga's brutal actions ignite Kenshiro's anger, leading the younger brother of Hokuto Shinken to face the Lone Celestial Wolf in a final confrontation. To Kenshiro's surprise, Ryuga accepts his punishment with little resistance, as he had intentionally hurt himself before their fight.

In his final moments, Ryuga reveals his true duty is to guide and test who was actually worthy to lead the new age: Kenshiro or Raoh. Assessing that the kinder younger brother is more worthy, he gladly expresses his belief in Yuria's choice of lover before dying from his wounds. Toki's spirit lifts his body after his death and they both become stars in the heavens. It is later revealed that Ryuga had assaulted Toki as part of a mutual agreement; they had hoped to awaken "true sorrow" in Kenshiro's heart so he could gain the ultimate technique of Hokuto Shinken: Musou Tensei, the "Unconscious Transmigration of Souls".

Quotes

 * "The lone wolf's destiny is steeped in blood!"
 * "If it helps to bring peace, I will gladly become a bloodthirsty wolf!"
 * "Rotten branches can bring down even the greatest tree!"
 * "My star is the Star of the Lone Celestial Wolf. It dominates the night sky!"
 * "Do you feel cold? You will soon be put out of your misery."
 * "My fists move with such speed, you will feel a deep chill when they strike you."
 * "I had no idea you possessed such a strong aura!"
 * "I suppose I have no choice but to fall back and regroup."
 * "I have a feeling that our paths will cross again."
 * "In order to avenge my sister Yuria, I shall be victorious!"
 * "The Lone Celestial Wolf needs no pack. I loathe those who commit wickedness behind the safety of numbers!"
 * "The Star of Enchantment has no place in quelling the chaos! I shall do away with you myself!"
 * "If our sister could see us now, what would she think?"
 * "This age demands people of strength. I shall see for myself if you are worthy!"
 * "You're a brawler... That is a dead art that has no place in this land!"
 * "You are a rotten miscreant... You will never manage to rule this land!"

Techniques

 * Tenro Toga Ken - Ryuga first jumps with a slashing uppercut then comes down with a downward slash while twirling.
 * Tenro Senga Sho - Ryuga does a machine slash attack to the target then does an upward slash.
 * Tenro Koretsu Dan - Ryuga dives forward with a wave of energy cutting anyone in the path.
 * Korou Shoten Geki - Ryuga dashes forward with his elbows out. If he reaches an opponent, Ryuga impales the opponent on his righht arm, then tosses him/her in the opposite direction.
 * Tenro Kaiten Geki - Ryuga jumps up briefly then slices the ground around him creating a vaccuum around him that will cut up his foes.

Fighting Style
Taizan Tenrōken (泰山天狼拳 "Tai Mountain Heavenly Wolf Fist") severs flesh from its victims with fast, slicing attacks, severing their nerves so quickly that it inflicts a cold sensation before they die. Ryuga makes several wolf-like poses while performing his attacks. Unlike most of the martial artists in the series, Ryuga's fighting style belongs to neither the Hokuto or Nanto disciplines. One of Ryuga's signature techniques is Tenrō Tōga Ken (天狼凍牙拳 "Heavenly Wolf Freezing Fang Fist").