My Threat, My promise

At thirty-six, Manjiro Sano has become a name whispered in fear.
As the ruthless leader of Bonten, he rules Tokyo from the shadows. Wealth, power, blood, and loyalty surround him-but none of it can fill the emptiness inside him.
Then Mikado Momodera enters his life.
Mikado belongs to a world Manjiro never knew existed-a world of Oni, Momotaro, and ancient hatred. He should have been nothing more than a stranger crossing into Manjiro's territory.
Instead, he becomes the one person Manjiro cannot walk away from.
Mikado sees the loneliness behind the monster everyone else fears.
Manjiro sees something in Mikado that makes him want to protect rather than destroy.
But loving someone in their worlds comes with a price.
Enemies are watching. Secrets are waiting to be uncovered. And the closer Mikado gets to the King of Bonten, the more dangerous his love becomes.
Because Manjiro Sano has lost almost everything he ever loved.
And this time, he refuses to lose again.
When the most dangerous man in Tokyo falls in love with the one person he was never supposed to meet, love becomes his greatest weakness-and his most powerful weapon.