Tamahome:
Another fanfiction.net entry... sigh. I *really* don't like it when authors archive themselves there.... But that's a personal thing and I should not let it impact on this review.
This is a first chapter, and I can see that this will require a lot of work. Not only because it's in unfamiliar territory (World of the Four Gods after the calling of Suzaku), but also because of the setup. Nakago's motivations were revealed in his death, and nobody who hasn't seen that death scene really likes him. It's only in understanding 'why' that we can forgive the 'how'.
The writing is good but we will have to see where the author takes this setup before we can say anything else.