System Exorcist

In 2030, the island country opened Pandora's Box, and an invisible will enveloped the island country for three days and three nights. Since then, various monsters have appeared all over the world. At the same time, mysterious cities have risen from the ground, and people have been forced to migrate into these cities. 100 Years later, with the emergence of demon kings one after another, mankind is at a comprehensive disadvantage. Until one day, as a person who awakened the power of the system became active around the world, a turning point occurred...