Sent To A Fantasy World and Now All the Men Want Me #6 by Jaclyn Osborn

Life for Evan hasn’t been the same since the morning he woke up in a fantasy world. Falling in love with five men. Opening his dream café. He’s never been happier.
But that cozy life couldn’t last forever.
After a betrayal and huge misunderstanding that results in him being chased from Bremloc, Evan and his men find an ally in the last person they expect. The demon lord welcomes them into the Shadow Realm, offering them shelter from the danger lurking beyond the barrier.
Only one problem. Humans and demons have been in conflict for centuries, so trust doesn’t come easy.
Between the stress of his men constantly butting heads with Lord Onyx, Evan also learns more about a rare magic he possesses, one that’s made him a target for powerful mercenaries.
What’s even more complicated? Lord Onyx is one of Evan’s fated mates.
Despite Onyx’s reputation for being cold and ruthless, Evan can’t ignore the way his heart flutters each time their eyes meet. But will his other men accept the demon lord as one of them? Or will this be the thing to push them away for good?