Highschool: Blood and Sorrow

In 1965, human children began being born with a magical Stigmata in their blood that gave them mana flow in their veins. And over the years, more and more kids were being born with this magical Stigmata and governments and scientists across the world couldn't figure out why. Decades later, in 2045, the world has now accepted magic and schools have been opened to train young Mages to mold them into experts of magic. But looming in the darkest, a global threat lurks, awaiting its chance to rain down destruction on the world as we know it.