From that time onwards, the place, previously known as the 'Damned Realm' later changed into the Passing Realm, which said to be a place for her descendants, both Pureblood Alphas and Enigmas, to find the 'peace' and 'heaven' they might not be able to find in the Mortal Realm until the end of time.
The civil war finally ended, and peace returned to the empire when the old siblings met and shook their hands again.
The progenitor made them swear an oath that they would never fight for the Supreme Power again. She eventually hid half of her power in the form of blood essence somewhere in the Passing Realm, and kept the other half with her in the Mortal Realm.
Nobody was supposed to know about it, but Enigmas found a way to retrieve that power from the Passing Realm and stole it for their own gain.
Slowly but surely, Enigmas restarted their old agenda to take down the empire and erect their own by using the said power.