It took you a day to reach to that conclusion so must must be it.
It took you 9 minutes to say that so that must be it. Btw I agree with you I've always said that she looks mixture of Park Gyu Young and Park Eun Bin but with short hair she resembles Park Gyu Young more.
People may not agree with me but I find it awkward to see a man in fifties doing romance with woman in thirties. I hope atleast the characters have same age as actors because they do look like their age, if they show them to be age fellows then it would be even more awkward to watch.
she was married to someone else and got pregnant then abort the baby. so he’s innocent
That's apparently not true but even if it is it doesn't matter who she was with as an adult what matters is that who she was with as a minor so how does that prove he's innocent? And does that even matter for you, you have considered him innocent since day 1.
After watching The First Frost I was in a doubt whether I should trust the rating again or not but I'm glad I gave it a try. I was such a wholesome drama even the names of the episodes are wholesome, it will put a smile on your face all time while you're watching it. And it's quite refreshing to see an expressive male lead instead of expressionless ones in a cdrama.
I hope they recast Park Seo Joon, Park Hyung Sik or Lee Jong Suk as ML. I wasn't already sure if he can pull a good comedy drama but I hope if they recast they choose someone good with comedy.
The article
https://mydramalist.com/article/kim-soo-hyun-s-agency-denies-the-actor-was-in-a-relationship-with-kim-sae-ron-when-she-was-a-minor
The source
https://n.news.naver.com/article/001/0015265717?sid=103