Gankaku-sho is an advanced kata that has been introduced into the SKIF extended syllabus content by Master Kanazawa. Two of the interesting aspects of this kata are the multiple stance changes, and the diagonal embusen (performance line) of the kata.
I have included a couple of presentations of the kata in this post - the first video demonstrates the kata as a whole, and the second video breaks down the movements with a commentary of what is happening. I hope you enjoy the content.