The actual professor that was supposed to teach in the academy before replaced by a mercenary, off all people. Now finding himself in the worst class of the Officer's Academy, comprised of the academy's worst students, as their sole Professor. Things cannot worse from there, right? Right?

After weathering the storm of Demons, the world lulls back to a normal calm. But with every calm, a new storm brews as ghosts of the past and new threats alike all ready themselves for the second wave. If the world desires peace, then they must be ready for war.

What if Asta never got to see Yuno become the Wizard King? What would Yuno do without Asta? How would the world of Black Clover be, without the hero that it needed? And above all else, can this world survive without Asta? The lost saga of magic's twilight is nigh...