Hakuryu: Reward for Shinogi Chapter 1 (2006)

Tatsuya Shirakawa is a young leader of the Kurosu clan whose territory is Shibuya. For the sake of his clan and his boss, he skillfully manipulates influential people in the business world and survives in the yakuza society with his knowledge and nerve. People called him "Shirakawa Ryu" (Hakuryu), as he did not hesitate to use any means necessary to win rewards one after another.