Hmmm reason is because he don't trust Claude to be a good Emperor after evrything Claude did to expand their country and became the largest PERDEL DECIDED TO BETRAY HIM CAUSE HE FEELS LIKE IT.
Perdel chose to follow him but he betrayed Claude by hiding and protecting the guy who kidnapped Aria.
Cause after Claude calmed the empire Perdel kinda planned to make the other guy the emperor as a 2nd option cause yeah Claude is Tyrant.
Perdel is also the reason how that guy easily kidnapped Aria. Perdel's giving information to Claude's bro.
For me getting banished is not really enough payment on what he did. Cause it's treason and normally death penalty is the endgame for.those who commit treason.
Yeah~ He's consider Genius but his reasons are the dumbest reason to betray Claude. Betraying cause of love or revenge might be better than Perdel's reason.
It's not like I want Perdel to die but his punishment is too light. And I dunno know if Sylvia is an angel or just dumb too to tolerate Perdel's actions. At least their twins are not like the parents and are loyal to Claude cause they swore their loyalty to him unlike their Father who also swore but nahh he betrayed him.
And Perdel did that cause he knew that Claude will never hurt him or his family. He knew that and his reason is because Claude is a Tyrant!! Like seriously dafack
lmao and ofcourse silvia would follow perdel though he voluntarily gave out ria's location and help theoren to kidnap her heh, i really cant like perdel after that happened cause his reasoning just doesnt make sense lmao welp atleast the twins habe some brains and can think for themselves and are loyal to the throne phew, wait so will caitel live long until ria's child aka his grandchild will be fully grown and ready to inherit the throne? since u said ria wont be his successor then does that mean he'll live longer if yes then heck im gonna continue reading this for caitel
It was mentioned in chapter 207 and 209 that Perdel betrayed Caitel because he doesn't see him to be fit for becoming Emperor. Because Caitel didn't act like a proper Emperor. He only entrust his royal duties to Perdel all the time. He sees Caitel as a tyrant and dictator than a ruler. What I mean royal duties is duties like making laws and overseeing his country's society and economy but Caitel never did that or should I say never cared for that. Everything happening to their country is all controlled by Perdel. So, he betrayed Caitel because he wanted for him to be replaced by Theoren so he hid Theoren location for all this time but he never expect that Theoron would hurt Ria so in the end Perdel realize his mistakes and regret it but he already knew it was too late and Caitel were already found out about it.

There won't be any major plot any more so if it guys wants to drop it, it's better if I stick a little more or wait until it's going to end.
(spoiler below)
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> Havel (The red head emperor) will propose to Ria in the upcoming chapters but Ria rejected him.
> The future chapters will about Ria X Ahin relationship development.
> Perdel and Silvia got banished along with his young children's but the two older twins will remain as Agrient knights.
> Ria would end up with Ahin and live with him.
> She won't become an empress in Agrient or Caitel's successor.
> Ria and Ahin will have 2 kids who will inherit each of their nations.
The End.