Ka Shin Fu(2006)

Ka Shin Fuu

Handsome men Kaoru and Ryuugo are pawns in a cutthroat competition filled with twisted plots and violent passion. The winner's prize? An entire family fortune! The Kourenjis must find an heir to the throne of their sprawling empire, and only one young man will finally ascend to the position of power. But there are secrets that define this family's fate. With everyone grasping for the golden ring, will it take a fatal fall to finish this wicked game?

(Source: June Manga)