Withdrawal Symptoms

Eating, sleeping, and sex were the basic desires that kept Si Zhuo alive, but to her, they were far too mundane. Then she met someone, and every cell in her lifeless body began clamoring to possess him. In public, he was powerful, polished, and composed. In private, he was cold, depraved, and utterly heartless. She planned to be his dog first, then become his master. If she couldn't turn the tables, she'd let him win first, then make him die. (Online romance: You ignore me in person, but online I'll make you wish you could reach me.) [Older man, fighting a brother for a woman, cool-headed and unhinged genius x wealthy patron]