At this point I think everyone already know this - THE KIDS ARE ADORABLE.
The two children definitely added value to this drama. Of course there are areas that could be better, especially the dubbing since I watched it in mandarin but for what it's worth, they did good.

The story between ML and FL could get a little cliche at some point but it was not draggy. Misunderstandings were resolved quick (within 1-2 episodes, max) and if anything at all, the ML and FL knows how to communicate. When the ML came to realised he has fallen in love with the FL, we could see how he tried every ways to make up for his mistake in the past (even though he still didn't come clean, and she found out first).

Ok i know there may be viewers who disagree with this, but I do feel that the ML could work on his acting a little. It seems that the FL and children were able to evoke more emotions but the ML's was "limited". We know he's in (emotional) pain, we know he's trying his best to make amendments and he feels deeply for the FL, but it felt like the emotions weren't unleashed entirely. Despite this I'm not saying that it affected any part of the drama. It is still watchable.

By the end of it, there would still be questions about the mystery and how everything unfolded but by this point, I think everyone would be more attached to the love line between the leads. It would have been a better closure if they provided us with answers about how the twins were separated (and why exactly), how the SML got the edited audio etc, but it's fine. I guess always good to have some open-mystery huh?

P.S there's a bonus/special episode that comes after episode 30 so be sure to watch it!
(It's not quite a continuation of the story, but instead they focus on having the ML come clean with the FL before she finds out on her own so... still quite a watch.)

Have a good run!