Chapter 45. This was when the Blackguard inductees were doing a Special and was told to beat the Color Prince's spy and Teia was forced to kill a person. This person said something peculiar to her before he died. "Bless me, goddess." he said. We are aware that there are 7 gods recognized before the founding of the Chromeria but through out the book there were mentions of a 9 and of the 200. If the Color Prince was trying to bring back the gods of old and by this spy's comment it shows that he's aware of the other two colors/gods looks like he has Adresteia included in his plans.
Please try and keep the conversation free of spoilers from the upcoming chapters and novels. Thank you!