The duel, an old tradition of the Western Continent, must take place in the arena in Aran. It concerns honor, and anyone can duel. Under the military government's high pressure, aside from the Thief Guild's shady dealings, other underworld groups have no room to survive.
In Lostra, things are a bit different. Duels between civilians and officials have no legal backing, aren't recognized, or supported, leaving plenty of room for underhanded maneuvers.
However, since the underworld is a local specialty, their duels are valid. Killing someone doesn't bear legal responsibility; it can be glossed over with mutual agreement, under legal provisions allowing for religious and cultural customs.
