Wrong Way to Use Healing Magic Volume 2: The Manga Companion

The Demon Lord's Army moves in for the kill! Healer Usato races to the front lines! After gaining immense power from the hellish training he barely survived, Usato joins the fight against the Demon Lord's Army as a healer! He dashes to the front lines to save his dear friends... only to find a black knight enveloped in menacing magic power lying in wait!