Great article, I have watched every drama you had mentioned expect for Ryusei no Kizuna, which is on my PTW list. I've also seen Inu wo Kau to Iu Koto, which was cute and sad at the same time.
I really liked him in Orthros no Inu, after I finished the series it left me with a lof of thoughts.
And I'm not sure if it''s just me, but Ryo's eyes seem to look so sad often. Maybe it's just the way he looks normally, I don't know :)
Because there were many comments here that criticized the drama, I have thought that maybe I would not like it as much. However, it turned out to be really easy to watch, and I actually really liked it. I have found the romance cute and the bromance was great to watch as well. For me, the actors portrayed the feelings realistically. The drama was funny as well (mostly in the first half), so overall I gave it a high rating.
At first I thought it would be more of a comedy, so I didn't expect that it would make me cry so much towards the end. Overall, it was a beautiful movie.
And I think Lee Joon looked younger at times with the brown hair...
I'm kind of interested in the amount of Hong Bin that can be seen here :D Can anybody help? Thank you :)
I am now halfway through the drama and I can now understand why you mentioned Kim Hyung Kyu. I haven't known him before, but he is the best here! I'm definitely a fan now :)
Lee Joon has won me over with his acting. This was actually the first time I have seen him act, and I have become a fan right away (though he was scary as hell here). Sometimes I think about Ryu Tae Oh, that's how big of an impression it has left on me...I wonder whether he would turn out that way even if his mother has treated him differently...or was she treating him like that because he was such a person since he was a child (they only mentioned him hurting his brother in some way)?
Actually what I didn't get 'was how Matilda wanted to believe in him and change him, but e.g. when he tried to touch her hair at the salon, she quickly put his hand away. Or she tried to get close to him and understand his thoughts, but when he said that she is almost like a mum to him, she shook it off and was uncomfortable. Somehow I wanted her to behave differently in those situations (although "horrible" was a weak word for him and he deserved that ending)..
It's almost a year since I finished this, but what has stayed in my mind is Siwan's acting which I was impressed of, Lee Bum Soo's tight clothes (LOL at the scene where he was questioning Young Dal and pointed gun at him trying to reach him over the table, it looked so unnatural) and Go Bok Tae, who was a pure comedy :D The yellow strip in the middle of his hair, the circus suit and how he groaned sitting down :D I couldn't take him seriously, I was just hoping somebody would hit him on his head :)
Eita is one of my favorite actors, I enjoyed his acting in every drama he played. I have seen Voice, Lucky Seven, Sunao ni Narenakute, Last Friends....I especially liked the last two mentioned, that guy knows how to act! Him and Ueno Juri were for me two strongest actors in those dramas.
This drama had everything and it's really an unexpected journey for me overall in a positive way. It's a emotion…
I felt bad for the Crown Prince in Joseon, when he realized his Princess was a b**** and the girl he could love was dead already :(
But as you said, the future ending was a happy one...
I totally enjoyed this, but one thing was annoying me a lot...why that b**** Se Na had to be everywhere to read text messages, see pictures etc. just in the right moment so she could use it against Park Ha...the cases were just too many...and why people don't lock doors to their houses! :D
Besides that, I have to repeat that I really loved this, especially the development of Park Ha - Lee Gak relationship, and of course the 3 servants :D And the ending was heartbreaking :(
K-Drama 
I really liked him in Orthros no Inu, after I finished the series it left me with a lof of thoughts.
And I'm not sure if it''s just me, but Ryo's eyes seem to look so sad often. Maybe it's just the way he looks normally, I don't know :)
And I think Lee Joon looked younger at times with the brown hair...
Actually what I didn't get 'was how Matilda wanted to believe in him and change him, but e.g. when he tried to touch her hair at the salon, she quickly put his hand away. Or she tried to get close to him and understand his thoughts, but when he said that she is almost like a mum to him, she shook it off and was uncomfortable. Somehow I wanted her to behave differently in those situations (although "horrible" was a weak word for him and he deserved that ending)..
UPDATE: Finally, it's here! 2016 is already around the corner, so hopefully it's not gonna be a long wait
But as you said, the future ending was a happy one...
Besides that, I have to repeat that I really loved this, especially the development of Park Ha - Lee Gak relationship, and of course the 3 servants :D And the ending was heartbreaking :(