I started watching this after being majorly disappointed in KO One Return. Apparently this is suppose to be remake/revamp to the very disappointing KO One Return. While I watch half way I thought, there is no way they are going to wrap this up cleanly because they were introducing scenario after scenario without completing the first scenario. But surprisingly enough they manage to tie up the loose ends in the end ,which clarified a lot of things. This drama also had the KO Rank which I was really happy about because it actually followed the story line to KO One^^Honestly, I could have skipped out watching KO Return and watch this and the story still would make sense. One concern I had was with the relationship with the supporting characters. The fact that "the girl" told "the guy" that he actually not in love with her and they left it like that was very vague. I actually like that pairing too. But over all I enjoyed this drama as much as KO One and I cannot wait until KO XDormitory comes out this year^^Which is the continuation of KO One React and X Family!!!!!