Deadly Game. Tokyo Nights, #1

Get in. Get proof. Get out alive. Easy, right? All Hisato Shibata had ever wanted to be was a police officer, to work his way through the ranks like his father had. Wanted to be known as an officer who upheld the oaths he'd sworn and keep the streets of Tokyo free of men like Tatsuo Ogawa-Shinjuku Ward boss for the Yamashita Organisation. Going undercover had never been a part of his plans, but when his superiors put the assignment in front of him, he dutifully agreed. But in getting close to Ogawa, Hisato learns some uncomfortable truths about himself.
Add in his growing attraction to Ogawa and the two men close to him, getting out alive is the least of his worries. Deadly Game is the first book in the Tokyo Nights Trilogy that features an undercover cop whose assignment goes wrong in all the best ways, a genderqueer host who will do whatever is needed to protect his lovers, a yakuza ward boss with his eyes on the top prize and his best friend who is hesitant trust the new member of their relationship.
Add in a gang conflict and things are bound to get a little...bloody.