Edge of Inhuman

Kai Thanatos was born to live in the shadows.
At age 11, he was recruited into an underground intelligence agency as an assassin-in-training. Now, at 20, he's setting records for the most kills.
But after the death of his best friend, his life in a grim, near-future New York City is one of haunted solitude. Just when he reunites with his sister and is assigned an alluring new partner, a shadowy syndicate rises to power, seeking to revolutionize society at a deadly cost.
When Kai is tasked with hunting down the mysterious leader at the helm, he becomes ensnared in a web that extends far beyond what he-and humanity-ever thought possible. He'll have to step into the spotlight to protect those he loves, and weigh the future of the world against his own fate.
Because there's a good chance he's not coming out as who, or what, he went in as.