层间声音

　　A noise is coming from the floor upstairs. Eunsu, hears this for over a month which causes @密爱 下载@uncontrollable anger to rise up. She gets eliminated again from a competition she had prepared for a long time. Eunsu decides to write her last piec@爱田奈 @e with the theme of the noise between the floors and persuades her friend to help her follow and track the secret.