To bring your favorite shimeji to your phone, firstly, you need to download and install this app
Download Shimeji App for Mobile
And then, you can easily create shimeji as below images step by step:
And these are some popular shimeji apps on Android if you want to quickly get shimeji
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Updated
Today, you can download the Shimeji - Desktop pet with all characters and categories. This app is a combination of all the above apps and you can easy to find your favorite character here