They might be psychos but they love each other dearly. I love how free the interaction between the father and his sons, how the twin is opposite yet is friendly to each other, and how the father at first was just awkward to the youngest princess.
I mean I read too much webtoon on this genre where the dad want to kill his daughter for whatsoever reason. This guy here just a bit of sociopathic and when he is guided, he can take care of his daughter pretty good.
I love the twin relationship in this webtoon too. Usually on this kind of webtoon, you either get 1st and 2nd prince that is at odd with each other, a close sibling but can't be together because different faction, or just one plain idiot vs cold smartass. These two get the idiot vs smartass but fundamentally they are the same, there is no faction and their subject know what the princes is best at and trust them at their jobs.
I also love how the father didn't question his sons ability at all. He told them to do something and he know they'll done it like how he want it. The banter between them while not like parent and child, it's good to see they can speak to each other freely like a friend. It's funny whenever I see the twin tease or judge the dad and the reverse. (Tho kinda sad to see the dad don't have friend his age)
Lastly, I also like Enisha of course. It's already a plus that she isn't isekaied protagonist but incarnated person from that world. She is the one who act like her age from all other protagonist in this genre too. She isn't too idealistic and fine with blood and war. She is realistically cunning but not too venomous. I love I can see how she slowly open up and love her new family dearly.
Because it seem she was a lonely person when she was an arcmage. I'm gonna bet she was the one who made Arcus because mages (witch) probably persecuted before.