Though Yokohama wasn't where "skills" originated from in Japan, it was where most Japanese "skill users" flocked to for refuge. "Skills" were largely just rumors - though they had existed for thousands of years - but research was still secretly being conducted on why these individuals' RC cells would react so strangely without the need for consuming humans. Skill users - people with skills - could vary in strength and flexibility, some could kill without lifting a finger, while all others could do was never get mosquito bites.

A branch of government was made - though the general public didn't know about it - to monitor these skill users, but something lurked in the shadows of Yokohama; the underbelly of the city most had the fortune of never encountering: the Port Mafia. Filled with skill users, ghouls, and ordinary humans alike, they were the worst of the worst. Their enemies didn't usually exist more than a year, but there was an outlier.

Aogiri Tree, though only by a slim chance and with horrible conditions, managed to make it through their first years feuding with the mafia, but they couldn't do it forever. However, they continually underestimated them, making their last mistake by not understanding the danger of the Demon Prodigy. It took only a week. He had them dancing in his pale, boney hand the entire time, and now, Aogiri found themselves working for their former enemy. At current, they were working on prying Kaneki from Jason's grubby little hands to hand him over to the Port Mafia with their monthly shipment of human and ghoul meat, just as they had demanded.