Johan Kim is an ordinary 19-year old who loves basketball and hanging out with friends. Though there is one different thing about him; his family are all exorcists. But this was something that was kept hidden from Johan. When his parents die suddenly, Johan's grandfather confesses the truth to him. Unable to take the upending, Johan runs out into the night. Unfortunately a demon arrives, giving Johan the fright of his life. Now that Johan has realized this other world, will he accept his destiny and fight for humanity? Or go back to living his normal life. Find out in Death of a Crescent Moon!