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New heroine appear later
Other (state a name and why)
b) So what is Kiyogetsu doing at the moment then? Now that they know that the Lord of Pandemomium that has looked out for them before is actually one of their own I don't see why they wouldn't help him out when he's in trouble (And they have been helping the Nura clan on more than one occasion, albeit unconsciously though.)
c) Yakuza are not military
The theme of the manga is co-existence between human and youkai, I think the squad will be one of the main players in this.