Book 1.5 - A Zodiac Assassins Novella 

What will Leona sacrifice to Rewrite a moment in time?

A demon army has been released army into the human world, making magical power the only currency that counts. Newly created Zodiac Assassin, Leona, is hungry to learn the dark arts from the sorcerer, the Master, a creature so dangerous he's imprisoned beneath Hell. But to release him, Leona must choose: ask two souls to sacrifice themselves to unlock the cage, or spare them and remain trapped in the world of the damned, her soul forever lost.