They're always the same. They both think alike and it's both getting in their nerves. Ever since elementary, they're already competing with each because of their synonymous thoughts. Now that they're high school, they started hurting each other until they learned the secrets and differences of each others lives and thoughts... Will their imperfections be a good sign?  Let's just hope that it's for...the better.

I don’t even know why I’m here. I’m just stating the truth. It’s not like I’m lying. I saw him. But when I told them the truth they put me here. I’m Do Kyungsoo. I’m stuck in this building, 3rd floor, Room 12.