I Wished for Murim Reincarnation and Became the Youngest Prince

'''Sun-woo, who longed for the world of martial arts, made a drunken wish to a mysterious hand to be reincarnated into the Murim. He dreamed of the romance of becoming a peerless master and a chivalrous hero—carrying a single sword, punishing injustice, and making lifelong friends. But after being struck and killed by a Ferrari, he did indeed find himself born into the Murim, but as the youngest prince of the Imperial Family. Elixirs. Secret manuals. Money. An army he could mobilize whenever things didn't go his way. He had it all in abundance. Wait, maybe this is actually better? Practical combat arts, the techniques of the Nine Schools—he'll master every single one of them. Villains ...