Dream Knight

From Demonic Scanlations:

If you're being chased by demons in your dreams everyday, having to run for your life to survive, living in the Dreamland would fill you with despair. In order to go against the dream demon, human's don't fight against each other in the dreamland, humans made a secret group to fight, but saving every human deep despair, is everybody's wish. However, to save others from this nightmare is easier said than done.