Guardian by Claire Cullen

An omega without a home. An alpha without a family. They need a pack—they just don’t know it yet.

Hawk put everything he had into fulfilling his father’s ambitions, almost dying in the process. After a year spent recovering, he has one thing left to do before he returns to the army—get his childhood home ready to be sold. The last thing he expects to find is an omega and his protective older brother hiding out there. Instead of chasing them off, he takes them under his wing. Between Damon’s anger and Jesse’s fear, he knows they’re running from something. As he coaxes Jesse out of his shell, his desire to help becomes something more.
When Jesse finds himself pinned to the ground by the scariest alpha he’s ever met, he doesn’t even try to fight. That always makes things worse. But beneath Hawk’s gruff demeanor is a gentle alpha. Drawn to Hawk’s caring nature, he wants to hold on to him and never let go. Only Hawk seems determined to keep him at arm’s length.
But an unexpected heat—and its not-so-unexpected consequences—changes everything.