I have mixed feelings about Cesar's behaviour.
On one hand, I like that he's truly showing his feelings for Canaria, how much he likes her and is jealous and all. It's a good difference from other Male Love Interests in Mangas/manhwas that rarely show their feelings towards the female leads.
But on the other hand, I dislike that he has so little trust in her that he would believe her to be a cheater? A relationship without trust will end up going nowhere, tbh.
I'm glad this is over and the misunderstandings were cleared, but... he should have believed in her more.
Also, two things that bothered me a little. 1) The Knights not believing/trusting Cesar's wife. And specially Jax or whatever the Red Haired Guy is called. He made the misunderstandings even worse -_- and like, that's your apology? Idk...
And 2) the Grey Haired Guy/Noah's Attendant/Spy has to be dealt with. When will Canaria realize that he's a spy??? She knows he's working for the Empress, she knows she gave the letter to him and it ended up on Cesar's desk. So??? Realize it already! Ughh