While he resembles Hein, he is not very strong and focuses on physical attacks, usually attacking with magic every two turns. Keep on healing with a Devout and attacking with everyone else (a Magus should use his best spells, in order to try to cause as much damage as possible) and eventually this enemy will go down, awarding the Moonring Blade weapon picked up before the fight. It is highly recommended to avoid using Drain or any Lilith's Kiss items after a Barrier Shift, as it may reverse the effects of the spell or item and end up killing the user instead of healing them.