I Awakened the One and Only Class

A fantasy world where modern cities and the supernatural coexist. When people turn eighteen, they undergo a “class-change ritual” to awaken a class that will determine the course of their lives. Classes range from F to S rank, determining a person’s potential and social standing. The world is being consumed by unknown realms such as the “Abyss” and “Demon Domain.” Monsters run rampant, and dungeons and secret realms are everywhere. Class holders are the core force protecting human civilization.