Demigods. Divine Warriors, Realms, and Modern Day Society

The was once a world where gods, deities or even heavenly beings had traversed the world, and then it went immediately down hill, these glorious people had decided to pack there bags and move here. Keep in mind, even the most perfect of beings, like Lostaire or even Irene aren't so perfect, after all, they are just a powerful version of human beings.

So basically, there are some people in our world that remember a few things of their past world, and those who know everything.

A Demigod in a world of Modern Society, with not so, sciencey problems.
Keep in mind, even those in power, everyone has their mistakes and flaws.