Anonymous

But Jason Asano is settling into his new life. Now, a contest draws young elites to the city of Greenstone to compete for a grand prize. Jason must gather a band of companions if he is to stand a chance against the best the world has to offer. While the young adventurers are caught up in competition, the city leaders deal with revelations of betrayal as a vast and terrible enemy is revealed. Although Jason seems uninvolved, he has unknowingly crossed the enemy’s path before.

When humanity waged war with the demons, the greatest warriors of humanity stood tall and won every battle...only to lose the war. Now, however, it is the demons' turn to learn that lesson. Battles innumerable have been won by their forces, but can they take the day at the only battle that matters? The final one.