I don't think the show undercooked the story and did not overcooked, to be honest when I started watching it at first I did know what to expect (I did not do any research or watch any trailers or seen any of the ads) and I think that story was fine sure their were some weird things that happened and I think some people will get bored due to how long each episode spans and that for me impacts the rewatch value, but when it comes to the show I try my best to understand what each episode has in store sure it's not the typical k drama romance but that for me makes it unique I like how the first few episode it's Hyun Woo regretting his life choices in marrying Hae In and his in-laws beratting him to be a better husband, man, etc and I was shock on how early they said lets make the ML have the idea to divorce his wife at episode 2 but not fall through with it cause she's going to die soon and so now the ML best friend says why not win her over so she can change her will and thus you have a couple of episodes where the ML is over reacting and being all lovey dovey with the FL so that she can revise the will which I think is a good part of the story sure we know that the ML is just doing all this lovey dovey husband thing so he can have a share of her assets when she dies, but behind the scene they start to rebuild their marriage to the point where when they go overseas he ends up forgetting about divorcing her cause he doesn't act like a family member or husband that want's the assets that she has and despite all the up and downs with her ex boyfriend which he is a complete psychopath even taking of advantage of the FL when she forgets everything after the surgery I was cheering the Fl on for her to try to remember Hyun Woo and this were "The mind may forget, but the heart remembers" comes in despite losing her memory her heart still remembers her true husband and all the good deeds she did to other people along side the stuff she wished to remodel in her department store which made my all the more fall in love with the story, sure the psycho boyfriend could have just said to her 'I'm your husband Baek Hyun Woo' and when she sees the real Hyun Woo she would disregard him as a fake and he could have said 'This man *shows photo of Hyun Woo* is Yoon Eun Seong your crazy ex boyfriend' but no my guy tries the "I'm your ex boyfriend and I'm protecting you from your crazy ex" that's where I think he messed up but all the more I like how in the epilogue parts she still does not like him made me laugh my guts out cause no matter what he did the FL all was said "I'm fine I can do it myself" for me this has to be one of those show where understanding each episode is the best thing you can do to understand the story it's not some show you can breeze through like the rest of the k drama romance and rewatching it could be a hassle and leave a sour taste in your watch cause you already know what to expect and I think understanding each episode and taking you time to watch each episode will leave you feeling refreshed and satisfied that you took the time to understand each episode. That's all I can give on this review.

[TLDR: Understand each episode and the show is not overrated or undercooked.] (personal opinion)