Taeyang Guk

The current master of the thought to be extinct Northern Broad Strike art. He trained Lightning Tiger in Northern Broad Strike, so he might be able to fight Yuri more equally, later, Lightning Tiger told Hayato where to find Guk Taeyang so Hayato could attempt to learn true Northern Broad Strike instead of the lesser Reunion-restored form of Northern Broad Strike, in return for not divulging Lightning Tiger's knowledge of Northern Broad Strike. His name and title was first mentioned by Gu Honse in Chapter 7 when he asks Gangryong if he knows him, perhaps in an effort to find out if Yoochun taught Gangryong Northern Broad Strike as well, which would go against the deal he made with Guk Taeyang. Hayato later confirmed that Gangryong was not taught this. In volume 10 after becoming aware of the Heaven's Riches Factions plan to destroy Reunion and kill all students of the school calling on friends he goes to save Hayato due to his belief that Hayato can take Broadstrike to a higher level as Hayato was able to use broadstrike at a level impossible in someone who was self-taught. Taeyang latter succumbs to his injuries but not before passing the secrets of Northern Broadstrike onto Hayato