A criminal organization that mainly operates within the confines of Kusari and its borders. And it is already well known and established that the Hogosha operate with the blessings of the Kusari government. So, for Hogosha to start showing up in Bretonia would mean that they are doing so with Kusari's blessing...which would put diplomatic strain between the Bretonia and Kusari governments to do something about it or risk going back to hostilities.
The reverse would happen if you started seeing a bunch of Bretonian Privateers operating within Kusari, which I think no longer have Kusari within their ZOI (I think they've been re-purposed to mainly go after Gallia). They can still try to hit them in the Taus, but should avoid pirating within Kusari's borders.