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In the niche world of desktop personalization, few things are as charming—or as distracting—as a . If you’re a fan of Toby Fox’s Deltarune , you’ve likely encountered the "shimeji Ralsei," a tiny, animated version of the beloved Prince of Darkness that lives on your computer screen.

This is the "engine" that runs the characters. Most fans use the Shimeji-ee (English Enhanced) version, which is open-source and easy to navigate.

He often curls up into a ball to sleep on top of your active windows.

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