层间声音4.0

　　A noise is coming from the floor upstairs. Eunsu, hears this for over a month which causes uncont武唐攻略rollable anger to rise up. She gets eliminat我们妖怪不许单身ed again from a competition she had prepared for a long time. Eunsu decides to write her last piece with the theme of the noise between the floors and persuades her friend to help her follow and track the secret.