Knox Lofgren is asked to run the martial arts program at Black Arts with Shiori Hirano, Ronin Black's sister, while Sensei Black travels. Publicly, Shiori cooperates with Knox, and the two highest-ranked belts appear as a unified front -- but in private, they butt heads constantly, despite the undeniable attraction between them. Soon their power exchanges start to make for a sweltering dynamic in the bedroom. At first, Knox is shocked to be living...