This drama has been in my watch list for some time. I went into it without any knowledge of plot. The begining was great, really liked the development of characters from children to adults and their bonding. The sacrifice made by them really shows their growth. But when the romance arc began, i wasn't very happy. Maybe because i have seen them as siblings growing together. But I got used to it in a few episodes and even began liking them. Overall, it's a great drama, which I can recommend to everyone.