Issei Demigod of Olympus

(I do not own Dxd or any of the characters or art work shown. I only own my idea/plot of the story.)

Ah Greece the homeland of many legends, and many heros, yet also to many tragdies. Imagine for but a moment if one day Issei went with his family to visit Irina and hers, yet instead their plans for this visit became instead a shared vaction to Greece? And then imagine if the children of the king and queen of the greek gods decided to play a little prank on their parents, getting them to fight and casuing the almost compelelt and utter destruction of Athans? And what if, while they left all the other humans to their fate, they decided to rescue a young little Issei, crying for someone to come and help his best friend, Irina? I wonder, what kind of legend would this sort of set up make?