The core engine is the "Shimeji-ee" program. This is the software that runs all your desktop pets. You can find the latest version on the official GitHub page [Valkryst/VShimeji] or through Kilkakon's website.
Fans love these because:
So go ahead. Download the update. Let the Dark Prince onto your desktop. And prepare to smile every time you see a little flash of pink and white scurrying across the corner of your screen.
In essence, is a small but telling window into how fans keep a beloved character alive on their desktops — one fluffy spell-casting prince at a time.
Therefore, searching for "Shimeji Ralsei UPD" ensures you are getting the most polished, bug-free, and expressive version of the character. Why You Need a Ralsei Shimeji on Your Desktop
: He can grab, scale, or "throw" open applications that are not fully maximized.