The Mightest Mortal Grand Order

It begins with a boy meet girl situation. A world at stake, an Inexperienced Mage and a dying Demi-shielder, their joy, and suffering. But as a result of the pondering of a mischievous Imp a new question is born what if... instead of an innocent ignorant mage, there one who is a Hero in in his own right. Someone who holds both the best of both Man and God, Herald as The Earth's Mightest Mortal... SHAZAM!!.