How he got out and met Shyao is unclear, but they were taken in by a master who taught them of the arts of fighting, magically and physically. However, the powerful demon White Tiger destroyed their master, and Rey vowed revenge. Before dying, their master entrusted the PaSa sword to Rey, telling him to use it wisely. However, as the sword became part of Rey, so did its longings. Thus, in order for the PaSa sword to maintain its tremendous power, it must be constantly fueled by demon blood, thus Rey must continue killing if he hopes to escape the wrath of the heavenly soldiers and sages, and also to protect himself from the PaSa sword's rival and companion, the PaChun sword.