Adventurers are one of the jobs in this world.
One can become an adventurer by registering with the Adventurers' Guild.
They cover a lot of jobs―like monster extermination, bounty hunting, or ruin exploration.
In other words, jacks of all trades.
"If you become an adventurer and fulfill the requirements, you can receive the rights to start a Legion from the Adventurers' Guild. Among Legions, there are ones advertising specialties like "Won't defeat anything but dragons", "Won't accept members other than noble magicians higher than B rank", "Only accepts female adventurers as members". Therefore if you become an adventurer and make a Legion and declare the objective of