WARNING: SPOILERS
I thought the ending was incredibly moving (and from what I could tell, kept reasonably true to the source material). But it’s only now (after the recap has been put to bed) that I’ve realized he not only violated the first rule (not to reveal yourself) but the second as well – no revenge. I didn’t really notice (or think about it) originally because I was so caught in the emotion of Da-hye realizing the truth, but he took revenge on Suk-chul. He made it so Sul-chul, the man who killed him, was also killed. Primarily so he wouldn’t kill more of the people Gi-tak loves, but it’s still revenge, y’know?
So that means he must have been fully aware what he was doing. In order to protect the people he loved, he made the noble sacrifice (and I mean that sincerely, not just in a sarcastic “noble idiot” kind of way). He realized that by sacrificing himself and the life he lived – all the memories of him and his past, ceasing to exist – he would be able to give his family/loved ones a better life than he was able to when was alive and still a part of his consciousness.
I’m of the opinion that Seung-jae would not have survived his wound, so in addition to giving Yi-yeon and Da-hye happier memories without him in it, he also saved Seung-jae’s life – literally. With Gi-tak no longer existing, there’s no reason for Seung-jae to have been stabbed in the first place.
I’m still a little confused about some details about how certain things could have happened once he ceased to exist (such as the epilogue – would there have been a need for a photo of young Da-hye? Did she have a happier childhood and maybe get adopted by someone who didn’t run into her with a car because she was chasing after her brother, since she never had one to begin with? But those are just details, I suppose). But I’m very satisfied with his ending, because he got to be the man he never could while he was living – all while in a woman’s body.
As for Monster, I totally understand being overwhelmed by its length. I found the drama really starts to pick up once you’re past the first couple of high-melodrama episodes and starts to reveal the fun I’ve come to expect from this writer. Of course, there’s still all that revenge stuff, but honestly I kind of forget about it until it’s brought up because of how much I enjoy the spy stuff. Also this writer is responsible for the two (out of three) 50+ episode dramas I’ve stuck with, so I have reasonable expectations that it will keep my attention to the end.
Also I realize that not everyone adores Park Ki Woong to the extent that I do, so there’s maybe additional motivation on my end to see it through.