jiren was once a simple man that was brought into the noble knight corp to protect the kingdom from all sorts of monsters and evil warriors. after a battle with a manticore he had lost both of his arms were torn from his body forcing him to leave the corp, until a god from the etherial realm gave him a pair of metal arms crafted by the finest blacksmith, but they were also cursed and can only be removed by killing a demon god from the underworld. so jiren continues to protect the kingdom while searching for the demon god to help remove the cursed metal arms