Loyalty might be a key theme as well. Characters in the novel, especially those around the king, may have to choose between their loyalty to the king and their own personal feelings or interests. And the king himself may face loyalty issues within his court and in his relationship which is related to the affection call.
One similar novel could be 'The Royal Romance'. It also features a relationship with a king and has elements of affection and courtly intrigue.
Perhaps the main event was the first meeting of the king with the object of his affection. It could have been at a grand ball or during a diplomatic visit.
It's difficult to determine without more information. However, if it's a story about a king's affection for his people, the main characters could be the king and some representatives of the common folk, like a wise old peasant or a brave young villager.
One of the main themes is self - discovery. The protagonist often explores his own identity during the night - time adventures. Another theme could be the allure of the night, as it presents a different world compared to the day.
One of the main themes is survival. Buck, the main character, has to fight for his life in the harsh Alaskan wilderness. Another theme is the power of instinct. As Buck adapts to his new environment, his primitive instincts start to surface more and more.
The main themes include cosmic horror, the insignificance of humanity, and the existence of ancient and powerful entities beyond human comprehension. For example, the Cthulhu entity itself represents a force that is so vast and alien that it drives those who discover it to madness.
One of the main themes is survival. Buck, the main character, has to adapt to the harsh Alaskan wilderness to survive. Another theme is the call of the wild itself, which represents a primal instinct within Buck that draws him towards a more natural and wild existence away from civilization.
I don't know as I haven't read it, but it could be a young man with a mysterious past who discovers he has a claim to the throne.
Since I haven't read the novel, I can't say for sure. But it's likely that the king himself is a main character. There might also be his advisors, his family members like his queen or his heir, and perhaps some kind of antagonist, like a rival king or a powerful wizard who opposes him.
The main characters are surely the king and the bodyguard. The king is likely to be a powerful figure, with responsibilities over a kingdom. The bodyguard, on the other hand, is someone with great physical and mental strength, dedicated to protecting the king.