Now, students of these dōjō's are not only trained there, but also live alongside their peers in barracks, taught in the way of the shinobi and trained to be perfect assets in the future. As sinister as this seems, even greater darkness lies beneath as those students eventually become powerful drug kingpins, similarly they may be involved in the shinobi underworld, such as human trafficking or the illegal sake trade in Earth Country. However, most become assassins, shrewd informants, bandits, or mercenaries of some sort, and with that in mind, ninja villages have banned the existence of these dōjō because of the threat they pose. Regardless, many disciples now spread the continent, influencing the youth in secret to join them, especially in areas torn apart economically by the Fourth War.