Rain (Paper Gods Series #2)

A STORM IS COMING 

When she first moved to Japan, American Katie Greene had no idea she would get caught in a battle between the Japanese Mafia and the supernatural forces that have governed Japan for most of its history. Despite the danger, Katie is determined to stay put. Tomohiro, the guy's she fallen in love with, is struggling—his connection to the ancient gods of Japan and his power to bring drawings to life have begun to spiral out of control. 

When Tomo decides to stop drawing, the ink finds other ways to seep into his life—blackouts, threatening messages and the appearance of unexplained sketches. In order to save themselves, Katie and Tomohiro must unravel the truth about Tomo's dark ancestry and confront one of the darkest gods in Japanese legend.