A different world that combines modern city and fantasy. Everyone will undergo a "career transfer ceremony" at the age of 18 to awaken their career and decide their life. Occupational grades range from F to S, determining potential and social status. The world is eroded by unknown areas such as the "Abyss" and "Demon Realm". Monsters are raging. Dungeons and secret realms are everywhere. Professionals are the core force to protect human civilization.
