I’m posting this rather belatedly, having seen it almost a year ago. I don’t understand what “ritteh” is referring to regarding an unrealistic storyline; it's a TV show, so of course it doesn’t adhere to real-world logic! This could easily be among my absolute favorite series due to the powerful emotional bonds between every single character—something that sets it apart from many others. If you are looking for a program that will take you on an emotional journey, with moments of laughter and potential tears, or simply something to enjoy for about 45 to 55 minutes each day, then I suggest giving this one a try. Just watch the first two or three episodes; I’m confident you'll probably decide to see it through to the end after that.

Source on TMDB