Born in Youteki City, Han, Ryo Fui began as a merchant operating between Yan and Zhao, forging ties with figures like Shun Pei Kun and the Shi Ka black merchant group. He engaged to the dancer Bi Ki, expressing affection through lavish gestures. Strategically leveraging his connection to Sou Jou, a Qin prince held hostage in Zhao, Ryo Fui invested his entire fortune to position Sou Jou as Qin's future king, even sacrificing his engagement by gifting Bi Ki to the prince. Following Sou Jou's ascension to the Qin throne, Ryo Fui was invited to court. He gained influence through bribery, rising to Chancellor of the Right, rivaling Chancellor of the Left Ketsu Shi. To consolidate power, Ryo Fui recruited exceptional talent, notably Shou Hei Kun, establishing the "Four Pillars of Ryo Fui": Shou Hei Kun (military strategy), Mou Bu (military might), Sai Taku (diplomacy), and Ri Shi (legalist administration). This core formed the foundation of his faction, which grew to over 1,000 vassals controlling territories supporting more than 10,000 families. Ryo Fui harbored ambitions to seize the Qin throne. His vision aimed to transform China through Qin's economic dominance, not military conquest, seeking to render war obsolete by integrating the states economically and ensuring prosperity through mass production. Despite this stated goal of peace, he employed ruthless methods. During the Sei Kyou rebellion against King Ei Sei, Ryo Fui deliberately ignored aid requests, intending to let the rebellion weaken both sides before seizing power. When Ei Sei prevailed, Ryo Fui feigned congratulations. He later orchestrated multiple assassination attempts against Ei Sei, employing the assassin group Chi You. When these failed, he openly admitted his actions during court proceedings, confident his political influence shielded him. Ei Sei, recognizing the power imbalance, dismissed the admission as a joke. Ryo Fui further solidified his position by manipulating the Queen Mother, with whom he had a longstanding intimate relationship and sexual affair dating back to their time in Zhao, aiming to destabilize the king. Their plot was overheard by the palace maid Kou. Ryo Fui attained the position of Chancellor of the State, becoming Qin's second most powerful figure. To counter this, Ei Sei reluctantly allied with the imprisoned Sei Kyou. Exposure of Ryo Fui's affair with the Queen Mother via court rumors orchestrated by Shi Shi eroded his support. After a decisive confrontation and debate at Kinen Temple, Ryo Fui admitted defeat. Stripped of rank and titles for crimes against the state, he was exiled to Kanan. In exile, Ryo Fui naturally attracted disaffected former followers and opponents of Ei Sei's rule, forming a faction potent enough to threaten civil war, especially during Qin's conflict with Zhao. Shi Shi advised execution to eliminate the threat. Ei Sei chose direct confrontation. During their meeting, Ryo Fui observed the king's inherent kindness fostered loyalty but hindered ruthlessly pragmatic decisions like ordering his execution. Ei Sei departed reaffirming his belief in human goodness. Approximately a month later, official reports stated Ryo Fui committed suicide by drinking wine poisoned with Zhen. His death caused his faction to disintegrate, ending the immediate civil war threat. Historical records officially mark this as his end, though the circumstances allow for alternative interpretations regarding the finality of his demise.