casualreader's Favorite

So, while I got the gist of the plot, there was some things I couldn't quite understand. If someone could answer these, I'd appreciate it.

* Why does cousin Ryan get weird (he is a cousin, right? In later chapters Moon calls him brother) and tries to make Moon believe Ryan and Yeon slept together?

* What is Choi Jungmyung's deal? He kidnapped Yeon so that Moon would hand over the three jade thing, and he wants that because he's been jealous of Moon for years? And when Moon foiled his plans, he just went batshit and brained him with a 2x4?

* What is Ryan's deal? He felt burdened by his parents and was jealous of Moon, so he cut his own neck and blamed Moon? To force him to take on the gallery? Didn't Moon want to do that anyway?

* A mysterious stranger saves Ryan from being raped, and Ryan looks for him, but never finds him. Does this ever come back into play, or is it a huge missed chekhov's gun?

* After the queen dies, the king goes into a depression. Bad guy minister takes control and tries to get rid of the Ji family because... reasons? Was the minister who called him out the head of the Ji family? And he wants the prince to seem like a traitor because he doesn't want him to come into power because he wouldn't be able to manipulate him? Is this a two birds/one stone kind of deal?

* The ninja Ji family was there to stop an attempted assassination, but after Yeon saved the King from an an assassin, Moon misunderstood the scene and thought Yeon WAS the assassin?

* Moon becomes King, gets married and has a kid, and lives for 20 more years after Yeon dies. After he dies, the dragon is like, "You killed your soulmate and unborn child, but you were also a great king, so we're gonna do a take 2"?

* The three jade thing was a dried apricot?

* Moon was in a coma for 2 years?

If anyone can help me clear up these up, I'd be grateful :)