Great series, and the plot is very interesting. This draw of Ryuko is from a project that I was paused called Sharingan Spectra Girls, based in the Sainy Seiya and Naruto. I took a famous anime girl, I design a Surplice for her based in mythological monsters (The Hades' Spectra armors was based on that) and I put a Mangekyo Sharingan on her eyes as a way of control. Satsuki isn't in this project, but, maybe in the future I would do something with her.