HSDXD:Issei Hyoudou Heaven's Feel

what if Issei meet zeltrech not the perverted old man at the age of 7 after irina left to england to train for becoming exorcist let see his adventure to become one of the 5 people to wield true magic. (AUTHOR NOTE:I will mostly not follow the canon so don't expect me of writing good im is inexperienced in writing sorry for wrong grammars and irregular update of chapter because of irl thank you for your time!!)