Primal Instinct by D.M. Mortier

Mazoku Matsumoto was constantly being pursued by men wanting to end his life, and by women who wanted to be in his life. Both genders pursued for the same reason, the wealth and power that he wielded. Raised to be the heir of his grandfather’s criminal empire, he wanted no part of that world. The fact that his position as head of their crime family meant constant danger for her, for Taki, sealed it for him. He wanted out.