I usually dislike the K-drama trope where two characters who knew each other as children (and, worse, one or both liked the other while they still wee youngins) become a couple as adults. I can think of very few dramas where this has actually worked for me (in fact, the only other drama where this has worked for me is Her Private Life). However, for some reason it’s working quite well for me in I’ll Find You on a Beautiful Day. I think it may have something to do with how, like everything else in this drama, the childhood connection between the leads has not been leaned on too much (and, hopefully, will continue not to be leaned on too much). The other thing is that the childhood connection in those actually makes sense. In most other shows, it’s some divine act of reunification that characters who knew each other as children meet each other as adults. But because these two characters lived a good chunk of their lives in a quiet rural town, it’s not at all surprising that they met as children (nor, even, that one might have liked the other).