God of War (Book 1) Male Reader x CW Supergirl

Your 26 years old, you thought of yourself as a normal guy, but you had anger issues, your skin is literal diamond, you had super strength in a way you couldn't even explain yourself, you did learn how to control it in your days as a teenager, but a question remains in your mind... the symbol on your head everyday and everytime, the Omega symbol... what does it mean, why do you see it everywhere, are you a God?