The Plastic
When everyone had left to do their duties, Yuna was left behind along with one of the leaders of the Mazoku Dojos.Yuri and his party had always planned to go and find a guild in the Third Beast Dimension that was said to exploit and force children, mostly orphans into modern slavery in exchange for time and resources to play the game. Martha Aki, the director of Japanese Central Intelligence had only heard of these from reports from her subordinates, but none of them were able to trace the real-world locations of the den.
They called them the Pied Piper den. Because of how they lure children into their den with the allure of the expensive but now playable game. All of the orphans had gone missing from their orphanages and it seemed that the Pied Pipers were using Magitek to not be traced by any form of surveillance.