After completing the Six-winged Trial, Sonia and her companions only need a thought to ascend the Heavenly Kingdom and be promoted to Divine Lord. There aren't many flashy conditions or thresholds; as long as they possess the World Secret Domain and complete the Six-winged Trial, they can reach the highest hall for mages... at least the highest hall of countless years past.
Six-winged God!
It would be false to say they are not moved; what mage hasn't looked up at the unreachable Heaven, fantasizing about one day residing there, becoming one of the most dazzling stars? What mage doesn't want to stand atop the highest peak, overlooking the world's most splendid scenery?
Lord of Gods, reigning over the Void Realm!
Power is insufficient to describe the strength held by the Six-winged God; if words must be used, it would be "The Divine Lord dreamed yesterday, and it can be realized today."
