Elyon
Author Sama, will William be using his entire resources when it comes to planning to fight against the Heir? He has actually a lot of untapped resources that he actually hasn't used back in Hellan. Surely the Knight Order isn't fully bound in just Hellan and is also part of William's private army. Or at least able to summon his elite knights which he personally knighted. what about Wendy? Surely Estelle won't sit idly after knowing the death of Ashera as well.
The fact that Celeste told that Celene had fight with her Fate by getting pregnant by William son and not by whom she bride meant to be Elyon has indirectly had tell that "Felix don't even think about her now " and she can disobey his command by using her power And I like the fact that Elyon had wrote that she can break her Fate I also think that this one is indirectly a message that William can also fight his fate