PowerHouse (Power Chain #1)

Authors Chelsea Camaron and Ryan Michele team up to push beyond the boundaries, crossing a line into a deep, dangerous, and forbidden world. One where no one escapes, even if they beg to. 
 This is the Power Chain Series-a series of interconnected stand-alone romances. 

Power House: Anti-Hero Game (Power Chain Book One) 
 No one denies me. Especially her.
 She dismissed me.
 That was her first mistake.
 She thought I was a nice guy.
 That was her second.
 She had hope.
 That was the final straw.
 I am Onyx Blake.
 I'm a powerhouse in an ugly underworld only found in her nightmares.
 She's going to learn quickly, I'm not the man to let anything go...
Including her.