Magical Sketch is a third party plugin to Shade

Magic Sketch is an entry level 3D product bundled with Shade 8 and earlier. It is a product licensed from a third party in Japan. Unfortunately, it is not licensed for inclusion with Shade 9 and higher.

If you already have Magic Sketch, you can maintain your Shade 8 installation after you upgrade to a higher version. This will allow you to keep using Magical Sketch.