If you already watched the drama, you will probably be disappointed in the special. I didn't like the drama's ending so I thought that the special will fix it and probably make it up for that unsatisfying ending but no the special wasn't any better, it even made me angry and regretful for watching it : another open ending with a non special story made me want to finish it quickly and get over with it. This isn't what you're looking for and don't dream to have a better ending than the one from the drama!