Well.. Its really a cute romantic one. When the situation comes where Gong chan and yoo rin neither can come out of their lies nor accept each other as brother/sister, I was like 'omg what happens next..' I liked the screen play as it was not boring at all and lead actors were amazing. I am kind of person who likes when boy and girl fall for each other but cannot tell the other person due to some reason.crazy isn't it? but it will be cute if you know that things are going to turn out well at the end anyways. Gong chan's best friend,who falls for yoo rin, does lots of cute little things to her. 'Never say goodbye' OST fits well with the drama. I have watched so many dramas after this, but its stands the best still.(hmm.. may be after Full house)