Forty Thieves

The Forty Thieves (Yosogizoku よそ義賊) is a secret society of thieves whom aren't known for their thievery as much as they are for their individual prowess as combatants. Under normal circumstances, the overall purpose of their heists isn't to enrich themselves any further but rather to prove a point to whomever it is that they're stealing from.

It should be noted that each of its members are tattooed with a number. Initially, the numbers represented the order at which the member joined. Currently, each of the numbers only stand to represent the members that the number's current bearer have succeeded.