Ghostblades, one of the four Swordsman sub-classes. They were Swordsmen that controlled Ghosts to fight. Depending on how a player chose his skills, Ghostblades could be divided into two types.
The first type used skills that buffed their attacks. They gave up some of their Phantom Ghosts, in order to achieve the highest attack. They were commonly referred to as Sword Demons.
The other type released their Phantom Ghosts in order to set up a powerful boundary that buffed allies who were in it. They were referred to as Phantom Demons.