The acting of the actors was very good, both the main and supporting actors. Was there a very good chemistry between the two main actors? I was one of those who did not like Lee Min Ho's acting and I was just curious why he has so many fans and because of this curiosity I watched his series and became more fascinated by his partner's acting and continued them, of course after watching the Iman series to some extent I changed my opinion, but after seeing this series, my opinion changed completely, and in my opinion, this actor gave his best performance in this series, to the extent that I enjoyed his performance as much as his partner. About the acting of dear Jun Ji Hyun, who is the kind and honest mermaid, there is really nothing left to say, they were excellent. Both the first parts, which have more humor, and the last parts, which are more serious.The script is very good and meaningful and gives very good lessons, just with it

Spoiler
The part where Dam Ryung (Ho Joon Jae in the old days) came and warned his future self, I have a problem and I think it was very ridiculous and meaningless and he could have given this warning much better and more logically instead of them meeting in one place. and tell him
But overall, it had a good script and a satisfying ending, and like many other series, I have no problem with its ending.
He has a very good sense of humor, he tried not to lose his sense of humor until the end, although the first parts are much more humorous.I won't say more about the romance of this series, there was pure and pure love between them, and the mood of the series and their relationship was very sweet and warm, and they had pleasant romantic scenes, so that when I saw it, I would smile unconsciously and my eyes would become a heart??
In the end, I am not a 10-16-year-old teenager, but I really like this series and I am very happy to see it, so don't limit watching this series by age, everyone can enjoy watching this series at any age, it's just necessary. Let it be according to your taste, that's all:)