A Wolf’s Promise by Noah Harris

The threat of war is gone, but the emotional scars remain. Dean and the pack have tried to move on, but soon discover they’re unable to consign the memories to the past just yet.
After losing his friend, Dean Matthews has been trying to heal the heartache by focusing on his future and training the rescued orphan, Silun.

But their peace is short-lived when the pack is forced to embark on a journey that will take them from the safety of the Grove and bring them face-to-face with darkness again.
With his unwavering love for Mikael ever-present, guilt-ridden Dean must find a way to forgive and redeem himself in the eyes of those he loves.

And that may prove to be the most difficult part of it all.