"Soo-won is a complex and multi-layered character in the famous Japanese manga series ""Eastern Palace Prisoner."" He is one of the main protagonists and plays a vital role in the story's overall narrative. Soo-won is mentioned numerous times throughout the series, and his actions and motivations shape the plot in significant ways.

Soo-won is initially introduced as a charming young man with a kind heart and a strong sense of justice. He is the cousin of the protagonist, Yona, and is next in line to become the ruler of the Kouka Kingdom. Soo-won's father was murdered by Yona's father, King Il, which gives him a personal vendetta against the latter. Soo-won's complicated relationship with Yona and King Il forms the core of the story's conflict.

Throughout the series, Soo-won's true nature is slowly revealed. He is a master strategist, a skilled fighter, and a cunning politician. Soo-won's ultimate goal is to unite the Kouka Kingdom under his rule and protect it from external threats. Despite his seemingly noble intentions, Soo-won is also ruthless and willing to do whatever it takes to achieve his goals, including assassinating King Il.

Soo-won's character arc is one of the most intriguing aspects of ""Eastern Palace Prisoner."" He starts off as a sympathetic hero, but as the story progresses, his actions become increasingly morally ambiguous. Soo-won's betrayal of Yona and his narrow-minded pursuit of power make him a controversial figure in the story's mythology.

In conclusion, Soo-won is a fascinating and complex character in ""Eastern Palace Prisoner."" He is a master strategist, a skilled fighter, and a cunning politician. Soo-won's ultimate goal is to unite the Kouka Kingdom under his rule and protect it from external threats. However, his actions and motivations are morally ambiguous, making him a controversial figure in the story's mythology."