On July 24, 2008, at San Diego Comic-Con, North American publisher Del Rey announced that they have secured the license to the Sohryuden novel series.

Offered a chance of complete supremacy over the city of Tokyo, Hajime must take a tough decision - one that could alter the brothers' whole existence.

Chapter 3 - The Awakening (The Black Dragon King Revealed) : The Ryudo brothers, accused of murder, flee the city and fall straight into Gozen's trap.

They soon discover that they are wanted by Military Intelligence for their hidden powers and true ghost train horrors come to life when they are pursued through the fairground.

Chapter 5 - Programmed To Kill (The Graceful Agent) : Dr Hatushi Tamozawa, Gozen of Kamakura's personal physician, thrives on dissecting human beings.

Aware of the Ryudo brothers supernatural powers, he is obsessed with experimenting on them and sets out to capture them with his cybernetic hunting dogs.

When the two youngest brothers, Owaru and Amaru, suspiciously win VIP tickets to the big league game, the evil doctor lures them into his cunning trap.

The evil Dr Tamozawa is one of the few to have discovered the Ryudo's secret and, using his new generation cyborgs, he engages in a plan to kidnap Owaru for his scientific experiments... Chapter 8 - The Iron Dragon (Rampage of the Iron Dragon) : Owaru Ryudo is still captive at the lab awaiting dissection at the hands of the evil, butchering, Dr Tamozawa.

Forced to flee, they steal a military tank in collaboration with a rebellious army captain eager for a slice of the action.

The chase is on and time is running out for Owaru and his brothers to salvage the city of Tokyo... Chapter 9 - The Fierce Wind (Storm of the White Dragon King) : The ruthless Lady L has kidnapped Owaru and has held him captive in an electrified cage at the Yokota Air Base, ready to be transported to America.

Hajime sets off on a lone rescue mission to try and free his brother but the attempt causes a disastrous airplane explosion on the runway.

A replica of Hajime attempts to release the prisoners and in the process destroys the police station, having the Ryudo brothers branded as terrorists.

Meanwhile, the Blue Dragon King has travelled to America and begins to destroy all the military bases and facilities and finally targets his anger towards the US President.