Anti-mainstream drama, a fresh new concept that I found. combines 50% cute animations of Yumi&Woong's cells and 50% Yumi and Woong's love story. Yumi and Woong's characters are often encountered in real life. I also sometimes feel related to some of Yumi's conditions. The story flows well, I really enjoyed it while watching it. Kim Goeun plays Yumi's character very well. Many positive things can be taken from this drama. First we are beautiful, handsome, attractive, perfect in the eyes of the right people. Second, in our relationship we should be flexible. In some conditions we have to put ourselves in the number 1 priority so that no one hurts us carelessly. However, in some other conditions.. we can't be selfish, and have to think about our partner's feelings. Third, from this drama we learn self love, even though one world does bad to us, there are still our cells that only focus on us under any circumstances, not on other people. So we must also be kind to ourselves. We are not alone, we have cells that support us. Overall I like this drama so much and looking forward to season 2.