One of best Kdrama in my drama list which i watched up to now.It teaches how much difficult a life is.it tells us how to face it with a smile and it motivates us to hang in there no matter how hard it is.Not only the main characters but also the minor characters did a huge succeed work here.if i tell how,let's just say WOW!people who struggle with their own lives...must watch this.i highly recommend.I think the main target which they trying to give to our mind is,no matter how much difficulties come to our lives...still there is a day which our lives also will become easy.so don't give up.stay and work hard for receive that day...!Fighting.....!