"<i><b>I was summoned to undo the corruption in Arad...?</b></i>" Jinsung is a user who has dedicated his life to Dungeon & Fighter. He was summoned by the Transcendent, Nemyr, to act as her forging tong. 『<i><b><b>You shall become my forging tong to guide the blade through its trials.</b></b></i>』 "<i><b>I'll become a fire tong or whatever. I'm going to survive in Arad no matter what!</b></i>" Will Jinsung, a veteran player of Dungeon & Fighter, be able to fulfill his given duties and return to his reality? Thus begins the story of the dark knight Jinsung to stop the end of Arad!