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.

The Kurosu clan has succeeded in making 20 billion yen from the sale of golf course stock certificates, just as young leader Tatsuya Shirakawa had hoped. In order to make the clan bigger, Shiryu uses the 20 billion to buy stocks of companies and manipulate their stock prices in order to make even more money. However, the stocks that Hakuryu is aiming for are stocks that even the president of the securities company cannot imagine...

An unprecedented scandal of human experimentation by a well-known company is uncovered. The cool and intelligent yakuza Hakuryu confronts the big company and faces the bullets that aim at him, which makes his hands sweat. Tatsuya Shirakawa, a young head of the Kurosu clan, receives some information from a new gang member, Toshio Hatakeda. It is a startling revelation that a well-known pharmaceutical company, Sekai Pharmaceutical, is forcing its employees to take a dangerous new drug. The reality is that the company is actually conducting experiments on human subjects, and Shiryukawa is once again forced to take action.

The Kurosu clan has made a huge profit through stock trading thanks to the skills of Hakuryu. The Kurosu clan leader, Kosuke Kurosu, receives an invitation from Namihiko Unno, a member of the House of Representatives, to a party for the purpose of raising political funds. At first, Kurosu is reluctant to attend the party, but finally does so at the urging of Hakuryu and others.

This is the only time in the series that Hakuryu has an all-out confrontation with the police. The highlight is how Hakuryu maneuvers his way out of the trap set by the police. Yoshiyuki Yamaguchi of "Kamen Rider Kabuto" plays the police chief. Kazuki Kannai, who has been appointed chief of police, has been cracking down on the Kurosu clan members in a ruthless manner. Kannai plans to crush the Kurosu clan in order to bring the other gangs to their knees, and if that happens, he will be at the top of the world, both in the front and the back. Shirakawa, determined, pledges his total surrender to Kamiuchi. Still, Kannai is not convinced...

The always calm and collected Hakuryu rides into Hakata to save his old friend who is caught in a turf war. Hakuryu's chivalrous spirit is a powerful force as he sharply cuts his way through the bloodthirsty Hakata yakuza and the war between the yakuza and a huge organization. Nanshu-gumi and Awami-gumi are the two major forces controlling Hakata. However, the Awakai-gumi, suffering from financial difficulties due to the closing of a coal mine, joins forces with the Hamamoto-gumi, the largest organization in Kobe, and begins to target the Nanshu-gumi's territory. After much deliberation, Hiroi, a young leader of the Nanshu clan, calls on his old friend Tatsuya Shirakawa and decides to fight to protect the clan and Hakata.

Tatsuya Shirakawa, the acting head of the Kurosu clan, who has ruled Shibuya, where outlaws are thriving, and has reached the top of the underworld, is planning to expand his power to the outer cities. In the midst of all this, Hirabayashi of the Ginsei Kai, who is after Shirakawa's life, unleashes three gunmen. Then, an old chivalrous man's deadly bullet pierces Shirakawa's chest...

Arisa, a former lady and hostess, falls in love with Hakuryu, who saved her from a tight spot, and goes to him make an oath with the Kurosu clan. The serious war drama as well as her unprecedented words and actions are a must-see.

The main character, Hakuryu, played by Hakuryu, is bursting with unexpected strategies. The development of his attempts to take a large organization by the hand is thrilling, and at the same time, heartbreaking and exhilarating. The Kurosu-gumi is in an all-out confrontation with the Royal Roads-gumi. Tatsuya Shirakawa, acting head of the Kurosu-gumi, takes this opportunity to move into Roppongi, the Oudokai's stronghold. He sets up an office in the midst of the enemy territory. The difference in the number of forces is 8,000 to 40. The inferiority of the Kurosu-gumi was obvious to everyone, but Hakuryu was confident of victory.

In this series, money-related matters arise frequently, and this time, too, we find ourselves involved in a bidding war. The heated information war, the true aim of the White Dragon, and the past of the Black Dragon are all neatly summarized.

Hakuryu, a.k.a. Tatsuya Shirakawa, acting head of the Kurosu clan, accidentally rescues a woman who has escaped from a life of drug addiction. The woman was a delirious woman who dealt with a political tycoon. As a sanction against the traitor, a pursuit team is sent in, and it turns out that Narisawa, who controls the national government and is known as a "dictator," is behind it....