About twenty minutes had passed before Motan finally clarified the whole story...
Although the act of slavery itself wasn't complex, presenting various specific pieces of information in a coherent manner was not easy. If it were merely an exchange between players, it could be simply addressed by saying 'I have a friend.' However, making it acceptable to the NPCs required a bit more effort.
In any case, although it took additional time (Anthony fell asleep four times during the process), Motan eventually managed to explain the Marshall Family's slave trade, the underground Viper Chamber of Commerce's secret operations, and the long-standing persecution suffered by the Fire Claw Territory. In the end, he resorted to using the guise of 'I have a friend' and invoked the innkeeper of a small town inn.