Digital Artbook for Yunyun Syndrome!? Rhythm Psychosis (PDF file).

How to access the artbook

• Right-click Yunyun Syndrome!? Rhythm Psychosis in your Steam Library and select Properties.

• In the DLC tab of the Properties window, confirm that the artbook DLC is installed.

• Right-click Yunyun Syndrome!? Rhythm Psychosis in your Steam Library and click
  Manage → Browse Local Files.

• File Explorer will open.

• Open the Digital Artbook folder to view the artbook PDF file.