First of all, can't really say much for the design visually obviously since I'm blind. I can give a bit though based off that brief little thing at the end though. I'm not really into piercings but I don't really have a problem with it here (I won't focus on it since it's not my thing but don't hate it). Nothing else here.
For the route ... Hmm ... maybe he admires yos you and wants to help out with the kingdom (also his job but doing it to help you out too). he was helping your parents in the game, so maybe he developed fondness that way (at least to start anyway). Maybe you get some kind of character points toward him or something (relationship points if you will() for following his advice and doing good things for the kingdom. He could be suggesting the marriage with the other ruler but also maybe want war afterward and you could havta do something with that for the route ... Not saying that's a good thing in general, but could be a route option maybe with him. Say for if you decided to be a more peaceful ruler (no war of course,) or a ruthless tyrant (chaos or evil route or whatever you wanna call that here).
For the last thing ... I wanna know personality for this guy. Other than the basic idea of what kind of things I would expect him to do for helping you with the kingdom management itself, what does he act like and what kind of person is he? a good person or a bad person? someone who thinks good for the kingdom means that he will wanna expand trading and merchant stuff with other kingdoms or close the borders from that? stuff like that.