Devil's Honor (House Phoenix #2)
S.W. Vaughn

DEVIL'S HONOR
For all his life, Shiro Kuroda has served the Harada empire--first in Japan, and now in America as a fighter in the organization that spans New York's underground. He also works closely with his sempai , Jenner--a secretive man whose sadistic cruelty is legendary.
Technically, Shiro is Harada's chief assassin, but his deadly skills have never been called into service. Until now.
When Shiro is ordered to hunt down an enemy whose lethal abilities match his own, he is forced to close himself off from those he trusts--his sempai , and his close friend Angel--because his adversary will use any means necessary to stop him. Even if it means going through the people he cares for.
Meanwhile, Angel and Jenner struggle with an uneasy truce, working together reluctantly to help Shiro--before time runs out for all of them.
Devil's Honor is a tense and twisted suspense thriller, with explosive action and shocking revelations.