

While setting up for the night, Biryong discovered Yul Mugi floating in the river nearby. On the way, he was accosted by some of the Black Snake assassins, but he dealt with them effortlessly. Yongbi humorously traveled through the Murim with his unwilling prisoner Goo Hwi. Afterwards, Yongbi shamelessly swindled the Red Bloods out of their wealth, leaving them almost penniless. Īt some point, Elder Muk arranged a meeting between Yongbi and Hong Ye-Mong, resulting in them getting engaged. With nowhere to return to, Yongbi departed to the Murim where he earned money to assist the Horselords' tribe and buy their freedom. Soon after, he was saved by the Gold Bug and learned that the members of the Horselords' tribe had sold themselves into slavery to survive. Struggling to cope with the events, Yongbi lost his will to live and eventually wandered off alone. Against his will, he was saved by the Horselords' prince who had a word with him before passing away. Enraged, Yongbi slaughtered the aide and the Grand General's elite bodyguards who attempted to stop him, and rushed to Yogok Gorge only to be met with the gruesome bodies of his men and the Horselords rolling in the flames. During the final battle, the Grand General's chief aide informed Yongbi that all the Black Lancers would be killed off in a trap except him. Later, Yongbi became the Lord Commander of the Black Lancers and waged a war to exterminate the Horselords of the borderlands. Yongbi also worked for an escort agency at one point.

At some point, he encountered a young Hong Ye-Mong and struck by her beauty, experienced a rare surge of emotions. After surviving being thrown into brutal conflicts over and over again, he eventually earned the rank of general at a young age and was labelled as the "Demon of the Military". In his childhood, Yongbi was frequently pitted against other children in death matches with him being the sole survivor every time.
