This is an SF story about a world where the rich are semi-immortal as well as physically powerful, as a result of the rejuvenation process.
For most of the novel, it seems like the only concession to Sci-Fi is making the power of the billionaires more obvious. However as the chips finally start falling down, the payoff is very well done, and leverages many aspects of the T7 rejuvenation process.
@zkrisher@bookstodon One of the best things about bookstodon has been the authors other readers have suggested. Someone told me to read Gnomon by Nick Harkaway and it turned out to be one of my favorite books of all-time!