While there were only four newly ascended Gods, Jason felt that he could fight only one in particular right now.
The others might not be stronger than him, but he wanted to show his devastating strength, instead of fighting someone head-on.
As such, the Celestia God he chose was the one, whose God's Halos unique traits were something that he could counter.
With that in mind, he picked Celestia God Keran, the newly advanced God, who was deemed as the most powerful one in this millenia's batch!
There were only three years left before the Tournament of the new Gods, and Jason had yet to make an impact on the Royal Celestia Gods.
And for that to happen, other Celestia Gods had to start speaking about him.
Because of that, he entered the Divine Colosseum and found Celestia Juan almost immediately.