I could deal with it in I.R. when he was still a brat but now in Cavalier, he's a freakin' adult but he's still acting like a kid who's lost his first love because of a misunderstanding. I can't feel too sorry for Nex on matters concerning Serin, but everything else, he had Depore, who can read minds and intent, to help him rule. Just so happens that Depore is a yandere for Jae Hyuk...
I kinda want to see just how much she changed from before because it looked as if she had become an emotionless drone of a Magic stone before Nocht got her and gave her human-like emotions. If there was a way to get rid of the 'yandere' part of her, she'd be perfect.
I had pinned my last hope on Serin's imprisonment being a ruse for him to keep her out of the way until it was safe for her again but no, he's keeping her there because he thinks she betrayed him (again). Honestly, how many times did he jump to conclusions in I.R. and that came to bite him in his undead ass in just that story? And he repeated the same thing again and again... he hasn't learned a thing about trust. The woman was a living stand-in for a magic stone for 3 years AND had blood siphoned off periodically for you, even if you didn't realize it - what in the world did she do that was sooooo bad this time? I swear I'll flip a desk if it's just something like a shadow of Serin stabbed him in the back or something...