Yakumo<3's manga / #sex infront of everyone(2)

It's about egyptian mytology and the gods and their relationships. The former ruler of egypt god of life Osiris coldly murdered by his brother, cruel god of war Seth. In Seth's hands, the humans are suffering for his gains, while he neglects his son and wife. Osiri's former wife Isis and his son Horus want to take revenge and save egypt. But what kinds of family secrets will unveil as they stand up to Seth?