Well its more the fact she's basically using it as braggin by proxy, also for foxes concubines are fine to have(Lest we forget Kero's own story of his wife and 12 concubines, of which the fox wife is a descendant of) also she seems to use it as a bargaining chip for more kits so in the long run its a win/win for her. Almost forgot to elaborate, but the bragging is because the champ is basically the prize catch of prize catches due to the fact were overabundant of Chi.
Also the whole fine with concubines thing is why the Taka 3some is a thing.
Also the whole fine with concubines thing is why the Taka 3some is a thing.