"Sohryuden - Legend of the Dragon Kings" is a 12-episode OVA series based on the manga by Yoshiki Tanaka. The story is set in a modern-day Japan where ancient dragon spirits reincarnate into human form, intertwining myth and reality. The narrative centers on the Ryudo brothers—Ryu, Ryo, Ryo, and Ryu—who are the reincarnations of the four dragon kings. These brothers possess latent supernatural powers tied to their dragon heritage, which begin to manifest as they grow older. Their lives take a dramatic turn when they are targeted by a secretive organization known as the "Dragon Slayers," who seek to eliminate the dragon spirits to prevent their resurgence.

The brothers, initially unaware of their true nature, are thrust into a conflict that spans centuries. As they uncover their origins, they learn of their connection to the dragon kings and the prophecy surrounding their reawakening. The series explores their struggle to reconcile their human lives with their dragon identities while facing external threats. The Dragon Slayers, led by the enigmatic Kujaku, employ advanced technology and ancient rituals to hunt the brothers, creating a tense and action-driven narrative.

Key characters include the Ryudo brothers, each with distinct personalities and abilities tied to their dragon lineage. Ryu, the eldest, embodies leadership and strength, while his brothers exhibit traits such as intellect, agility, and emotional depth. Kujaku, the primary antagonist, is driven by a personal vendetta against the dragons, adding complexity to the conflict. The series also introduces supporting characters, including allies who aid the brothers and figures from their past lives who provide insight into the prophecy.

The plot weaves together themes of identity, destiny, and the clash between ancient forces and modern society. As the brothers confront their enemies and their own inner turmoil, they must decide whether to embrace their dragon heritage or reject it to preserve their humanity. The story builds toward a climactic confrontation that tests their bonds and resolves the central conflict between the dragons and their hunters. The series balances action, mythology, and character development, offering a concise yet engaging exploration of its central premise.