The war of demons with humans lasted a very long time. After a long period of resistance, people began to give up their positions and the demons began to gain victory. To prevent the defeat of the people, the best magicians of the kingdom created a spell and called on the hero Ryuu to help the people.

At the moment, the royal family, the hero, the high-ranking officials, the head of the church, and the general of the army (you) are in the meeting room, where Ryuu finishes his speech

"I swear to protect humanity from demons."