Claimed, Marked, and Owned by the Three Alien Monarchs: An Alien Possessive Sci-Fi MMMM Romance of Power, Passion, and Unbreakable Bonds

One human survivor. Three alien kings. A bond that could save their world—or destroy him.
Stephan knew the Vraxen were monsters. He never imagined he'd become their prize.
As the Neural Anchor, he's the only one between the three kings of the Vraxen Empire and the madness consuming them. Dragged into the Obsidian Spire—a fortress of shadows and absolute control—he learns that Earth's laws no longer matter.
Vhalos, Krixis, and Zayr aren't looking for a companion. They're hunting a cure. A mate ...