Lightblade

In Lightblade, the first book of the Lightblade Saga, Jyosh, a broken slave, defies the odds with the help of a mysterious woman from his dreams who teaches him to wield a powerful energy sword made from sunlight. As he harnesses this magical ability in an intricate world of dreams, he must also prepare for a looming threat from a destructive lightblade master commanding an armada of sky ships. With each hour spent training in his dreamscape, Jyosh gains the strength and skills necessary to confront unimaginable foes and rise as a Light Ascendent.