[Machine Translation] After enduring the hellish training at the lifeguard corps, Usato is about to enter the battlefield for the first time. He makes good use of his training to heal the injured, but Suzune and Kazuki, who stand on the battlefield together, are in danger! Standing in front of them is a black knight of the Demon King's army, clad in hideous armor. The black knight's armor is impenetrable to any attack, and the two are slowly driven back into a corner... And finally, the black knight's deadly blade closes in on them. In order to save his precious friend, Usato runs on the battlefield armed with the wrong usage of healing magic! This is the second volume of the popular slapstick fantasy of a "healer" who defies common sense in another world!