I'm impressed. This drama manages to bring us a classic tragedy, something rarely seen anymore. The tragic hero with the fatal flaw, the misunderstandings where the viewer can easily understand how if only xyz had happened everything could have turned out well, the star-crossed lovers, the sense of inevitability at the end :D Right out of the Greek tradition. Shakespeare would love it.
I'm so very happy this did NOT go the same way as the Japanese drama did. Dark, twisted surprise endings are forced endings, and I hate contrived conclusions.
Tragedies and comedies are deeply entwined, BTW. In the classic ones (again, think Shakespeare) the comedies could go horribly wrong at any given moment, while the tragedies could end well 'if only'. This is a reflection of reality, and gives us that cathartic release - there but for luck go I.
That's exactly what this drama gave me. The real tragic figure is the cop who adopted the little girl. He made a mistake, and tried to rectify it, but his tragic error lay in not being honest with her. That continued when he finally found the other child - he was never honest with Moo Young either, until forced. If he'd told either of those kids the truth, the story could have ended well.
Kudos for an excellent adaptation!