[Machine Translation] The Demon King's army is closing in! Usato, the healing wizard, goes to the front line of the battlefield! After "adapting" to the hellish training, Usato has gained great power and joins the battle against the approaching Demon Lord's Army as a healing wizard! What awaits Usato, who leaps to the forefront of the battlefield to save his friends, is a jet-black knight clad in disastrous magical power...?