Bonten

Bonten is a criminal organization, the most powerful and dangerous in Japan, its members include Manjiro, Sanzu, Kakucho, Kokonoi, Takeomi, and Haitani.
But, of course, there are other organizations and criminals, and since Manjiro wants to expand the organization's influence, he decided to get to know the most powerful ones in order to conduct negotiations.
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So, Manjiro and the others threw a party at the enormous Bonten mansion. Only the twelve most influential mafiosi were invited; among the mafiosi, all the powerful criminals were there.
Since the negotiations would last several days, Manjiro allowed them to stay overnight in the mansion's rooms.