This review is as spoiler free as possible while giving fair warning about this drama! So no plot details, but mood spoilers etc.

For me, this was very much a drama of two halves. The first half was enjoyable, the second half was.... Not. The acting is good, the problem here was entirely the script/story.

The portrayal of multiple personalities isn't realistic, obviously. If you're someone who can take the show at face value and just go with the rules as set by that universe, you may still have fun with the first bit, like I did.

It's not the greatest show ever but it's an enjoyable enough ride with plenty of cute and fun moments - up until the main plotline wraps up and you realise there are still a bunch of episodes left. Instead of using those episodes to wrap up the romance, the show goes off the deep end in a way that I can only really describe as unpleasant.

The in-universe "rules" around the personalities are completely disregarded. There is a sudden and massive amount of unnecessary angst. Finally, and I am in no way exaggerating, the very last few minutes of the very last episode essentially goes "wait actually the personalities did work how we said they did at the beginning after all so forget all of that".

If you're the world's biggest Hyun Bin fan and simply must watch anything with him in... Watch up until the main story wraps up and then maybe the last 5 minutes of the last episode. It won't be satisfying but at least you won't feel actively bad.