Sumichou, the cesspit district under Kabukicho, has a large population of yokai who into existence because of the crime in the below-ground mini-kingdom. The Akumakai drafts every yokai that lives there into its fold. Only two yokai are reported to have completely escaped the vice grip of the crime overlords throughout the decades. While some of the spirit beings just accept their fate, some are organizing and trying to fight back. These brave souls are the Sumichou freedom fighters, the 'underground of the underground' as they teasingly call themselves. The group meets at random places and they have no headquarters. How they communicate, beyond in person, is not documented.
Oust the Akumakai
Become part of Japan's democratic society (They've been outside of that jurisdiction due to being magically hidden.)
Rebuild the area so it's safe and can allow for tourism and trade
Eliminate anyone who betrays them (It's a matter of survival.)