DO-OVER: Reborn As A Rookie

Captain Morgan was a powerhouse.
An Awakened Captain with eight Mana cores at the mere age of twenty five, she vowed to decimate all the Unfriendlies.
However, she and her squad fell in battle at the hand of an Unfriendly of the Devil rank.
But then, she wakes up as a friggin sixteen year old, seventy years into the future!

Now, she has to find her squad, suffer through the Awakened Academy once again, become an Awakened Sovereign and finally finish off all the Unfriendlies.

But in this life, she only has one core, her former friends are now dreadful foes, and someone out there is a traitor working with the Unfriendlies after her life.