The Tenth Realm Book by Michael Chatfield

Now freshly reborn in stark reminders of burning flame and blood. The tenth realm has been lost, and Akran’s hordes of devourers and ravagers have been loosed upon the lower realms, dealing the reclusive and powerful Imperium a serious blow. It will take Alva, the Imperium, the sects, clans, nations, and city states to band together as they did in times of old. It’s time for everyone to put their war boots on and put their cultivation to use.