Something that I've noticed from the start is that for some reason out of the 3 personalities, Sir Mugo is the most susceptible to the 4ths or "the original" one. Obviously all the personalities stem out of different traumas of the one that was the original human, so I wonder why specifically him...
I don't justify his behavior, but it's understandable.
He was battling with depression after losing something he started in the first place to feel worthy of her, but he also ended up being good at and loving it. This kind of thing with any athlete is normal. The thing that they have built their whole life around, for years, comes crushing down because of an injury, so it'll literally feel like the end of their world. And if you add to that that he was a teenager when it happened, everything is intensified, because teenagers are in fact, dramatic. It doesn't make his feelings less valid, but they just feel everything a little too much. I was a teenager once, I would know. I first got depression in high school, but when I compare my issues then with how I am now, I think I did blow some things out of proportion and I didn't enjoy some stages of my teens enough, because I wasn't mature. It's a normal process or stage of life.
Plus, he always had the kind of personality that had difficulty making friends and getting along with others, and Haneul said he was the type to beat himself up over stuff, like he's self deprecating, so he self sabotaged his relationship with Haneul.
Still, do I think this was dragged a little too much? Yes, but, I've also seen growth from her part. We just need wait for Mincheol to have his character development. I mean the accident was in fact an accident and yes, it probably would've been solved if he didn't have his type of personality and had just communicated already with Haneul. I'm pretty sure she never blamed him for it.
I swear it's like some people don't read...
I never doubted Shuraka. From the beginning it was made clear he changed Arnata for Tei, why would he do something with women if his intended, his "beloved" since he was a kid, was a man?
Also, Shuraka is the Padishah (king) and Tei is the Shahbanu (queen), so Tei can't compete to be his own knight...






But daddy, he's sooo hot