Do Kyungmin is Do Kyungsoo younger sister. Since D.O debuted with Exo, he asked Kyungmin to live with them because he knows that she will be lonely at home. She accepted it and now has been living with them for 3 years. She is one lucky girl that get to meet a lot of famous people. The media doesn't know that she is living with Exo. But what happen if one of them confessed his love to Kyungsmin? What to find out more? Then check this book out!