Okay, let me preface my review with the fact that you must be a lover of the crime/suspense/action genre. If you are not, this is not the drama for you. Acting: What can I say, I was pleasantly surprised by all. I've seen them all in different works but in this collaboration between Jpn/Kor; they reined supreme. Takenouchi Yutaka as Shou/Takumi was phenomenal. As the gangster Shou, he played the role really well. I loved that! And boy is he a sexy man! Choi Ji Woo as Yuna was a treat! Except for movies, I'd never completed one of her dramas but as Yuna (the ever changing Yuna), she was on point. I would be remiss in leaving out Sato Ryuta as Hide. Afro-ed down and funny as hell! Action: Okay, this is a dark. dark drama. You are talking about gangsters, crooked cops; no drama of this ilk would be complete without some serious action! No, no club and knives but serious gun action so the squeamish, beware. Filming: A Lot of the shots are dark and I guess the director was trying to project darkness because of the subject matter Romance: It was nicely done and I must say, very believable. You will definitely feel and experience as these two, Shou and Yuna fall for each other. It was also nice to see that they expressed that affection too with hugs, kisses, etc. Twists: Talk about a roller coaster ride!! There are so many twists and turns in this drama, I guarantee, your head will spin like you are possessed. HAH! I'm kidding but you will be shocked, dismayed and pleasantly amazed at the number of twists in this story; well done. Music: There really wasn't a lot of variations to the music; however, what was featured was very nice. I loved the songs that were featured and there were times that the instrumental music reminded me of one of my favorite movies called Ghost Dog; same beat. You'll be bopping your head from time to time listening to it. Overall, the writer definitely closed this drama with a bang and I was very, very happy. But as usual with JDramas, you must watch until the very end. I'm always sad when I do not understand why a drama has a certain title. Now I know what Rondo means. LOVED IT!! Completed in 2 days!