While waiting for this to be released, I was expecting it to have a good and happy ending but it ended up being so sad that I could never watch properly. My anger could never go any higher than it is when Yoong Su did all that. During the first three eps of this, I thought that he already changed his views but still, he values CSAT more than anything else. I know that he feels like that because he wants to be able to succeed but, if he did not do that, maybe he'll be able to do it. It's a very frustrating ending and the very last part of the last ep made me tear up. It must be nice if that was the real ending and not just a memory of the past. Still, the overall rating is 7.5 because the show is still good despite of what they did. I'm just glad that Kim Chi was alive..