The way 'The Last King' series handles power isn't about epic battles for thrones, though those are there. It's in the quieter moments. A character realizes their closest ally has been siphoning funds for years, not for personal greed, but to feed a starving province the crown ignores. That's the betrayal that hit me hardest—it's morally ambiguous. The series suggests real power is often a network of dependencies and unspoken agreements, and betrayal is the severing of those threads, sometimes for noble reasons, sometimes not.
I also found the theme of inherited power versus earned power really compelling. One king spends his entire arc trying to step out of his father's shadow, making decisions he thinks are 'strong,' only to alienate everyone and create the exact conditions for a coup. His power was always borrowed, and the betrayal came from within his own misguided sense of duty. The narrative doesn't paint a clear hero or villain in that arc, which makes the thematic exploration feel more mature.
Ultimately, I think the series argues that power sustained through fear inevitably invites betrayal, while power built on loyalty is fragile and requires constant, exhausting maintenance. The final book's climax, where the so-called 'last king' chooses to dismantle the monarchy rather than perpetuate the cycle, is a direct commentary on that idea. It's a messy, complicated conclusion that doesn't offer easy answers, which is why the themes linger.