I really, really like the way you're building the sense of a team here (especially since it's not the Rikkai we see now, but very much how they must have been a year or two back), but without letting go of the Yagyuu/Niou dynamic, either. ♥ Niou's observation skills make a wonderful sort of sense--not a data specialist like Yanagi, but observant enough that he can be a trickster--you have much more success at playing tricks on people (or impersonating them--and I've loved the references to that copying, but without making a Big Huge Deal about them) if you're a people-watcher and understand how they move/react.

Your Niou is hitting all the right buttons for me, but I'm also massively in love with your Yukimura and the way Sanada quietly but with such a strong presence behind him, supports Yukimura. ♥ ♥