Imbreak
I really wish you use the Concept of Campione. A mortal that able to slay a god is not a human! They have became something that many god fear and despise! They have became something many god shall hunt without doubt! They who lost their humanity due to their deed and the power they obtain! They who rule and terror the world! The king! The demon! The Campione!
Hestia and hartemis are considered virgin goddesses, they have a sacred oath or something, ivy is the goddess of marriage so you must not betray zeus I believe, in the end I recommend a search of what the Olympian gods are like in dc to know with whom mc can and does not get involved and I sincerely hope that this story develops in other aspects besides who mc is involved with or not because it is already getting boring.