Light vs Shadow

A badly injured boy was luckily saved by fencer Isabella and Yana, but unfortunately lost all his memory. Ten years later, the teenage fencer Ryun got a magic sword by accident and all have changed since then.  He's eager to explore the mystery of his own life and to solve it. The quite life was over, the teenage boy, Ryun, started the adventure on his own. Meanwhile, in the remote northern wild land, a grand plot was being hatched.