A Devil of Vitality always rises to a challenge.Nate Narek is barely keeping his head above water.But no one would guess that by looking at him. He's got camouflaging himself down to an art form. Feelings? As far as anyone else is concerned, he's happy and satisfied all the time. Only he isn't. Nate's always been the glue that holds all the shit around him together, and he's afraid that if he shows weakness, those people will be disappointed in him. It's better to keep it all in than to be a burden, right? Then suddenly there's a Devil of Vitality at his door, demanding he open up and let him into his twisted thoughts. A Devil who takes sexual deviancy and pigheadedness to a whole new level. For the first time in his life, Nate's no longer sure he can handle things on his own. Too bad Kaz won't let him run off to anyone else for help.Kazimir Ambrose has a few...issues.He wouldn't say they stem from his mother abandoning him at a young age, or the fact that his father remarried his work and was never around. But his cousin Baikal Void probably would. And does. Repeatedly. Especially when he wants to get under Kaz's skin. Typically, Kazimir can pretend like it doesn't affect him, but after one particularly frustrating night, he decides it's time he does something to prove the rest of the mafia wrong about him. If the other Devil's can manage being in relationships, he can as well. How hard could it be to make someone irrevocably and undeniably fall for him?When Kaz sets his sights on an uninterested Nate, the two are thrust into uncharted territory. What starts out as a means to prove himself quickly turns into an obsession that Kazimir can't seem to shake. There's something about Nate's sadness that calls to the monster in Kaz, and if he's learned anything from the Brumal mafia, it's that taking what you want, no matter the consequence, is always the right move. Nate tries to resist, but with Kazimir showing up anywhere and everywhere, it soon becomes apparent he's only got two options. Give in to the Devil.Or be taken by him anyway.Trigger Warning: This is a stand-alone dark romance which means there are many themes that some might find disturbing. Some of these include, but are not limited to, dub-con, violence, a pushy male lead who lacks awareness of social boundaries, and explicit sexual content not suitable for all readers. Please be sure to read the Author's Note for a complete list of warnings! HEA guaranteed! Though this book takes place on the same planet as the previous three in the series, each of these is a stand-alone. The events of this book take place sometime during the end of Call of the Sea and after, but neither that book nor any other needs to be read first to fully enjoy this novel.