You can find the official digital artbook on major gaming storefronts:
: If you don't own the game yet, this bundle often includes the base game and the digital art collection at a discounted rate on Nintendo Switch (Physical Edition) perky little things artbook link
However, I couldn't find a direct link to the artbook. Instead, I can guide you on where to look: You can find the official digital artbook on
If you’re simply looking to view the artbook for study or enjoyment, supporting the original artist via purchase is the only ethical and safe method. No legitimate permanent “free link” exists beyond promotional samples released by Mr. Shinja himself. perky little things artbook link
: The Perky Little Things - Artbook DLC is often bundled with the game or sold as a separate add-on.