I love this couple. there should be more art of them. Sumeragi and Kururugi are not even the same families. They are far cousins. I wouldn't consider it incest, and it can be almost canon...
Euphie dies. I love Suzuphie, but she dies. I would love SuzuLulu too, but alas... he also dies.
So when Suzaku takes the mask of Zero et the end... In my crazy sick mind, he finds relief and love in Kaguya... practically all she wants is to marry Zero X3