This drama was a fun and frustrating ride. It's the story of Kang Baek Ho who attends his best friends wedding and truly regrets never confession to her. He gets the opportunity to go back in time and to do what he was never able to do in the 20 years they knew each other. By the length of the number of episodes in this drama, you can figure out that this was not as easy as one would think. Therefore, this drama can be quite frustrating, especially if you had to wait an entire week to find out what happens next. However, due to these cliffhangers, the writers really knew how to get the audience's attention and make them come back for more. The drama has many themes running: love, regret, friendship, honesty, fighting for your goals, etc. It has both funny moments as well as heartbreaking moments. In terms of acting, I think it was well done on the part of the entire cast. The music was also quite pleasant. Overall, I enjoyed the drama despite the torture. Though, this might not be a drama for everyone, it can definitely suit the romantics out there.