You need the main game, Lullaby Days , to play this DLC.
Purchase Lullaby Days - Digital Artbook
This is the artbook for Lullaby Days.
※ The default path for DLC is as follows, but it may vary depending on the folder specified during installation.
STOVE Classic Client: C:\Program Files (x86)\Smilegate\Games\LullabyDays\Lullaby Days Artbook
STOVE NEW Client: C:\ProgramData\Smilegate\Games\LullabyDays\Lullaby Days Artbook
Please comply with the terms and conditions when writing a post.