You can only fight this boss on Rena's story to activate it just do 2 PA's in Harley and that's it I don't think this is a timed PA but I thought it best to do it before going to the new continent.
AS for the boss..pretty tough since it's just Rena don't be afraid to use battle items like I did poisoning him really helped.
I feel this fight is easier though even on Universe mode because of the way fights are done in this version.
PS:Next time we really do go to a new continent and fight in a little tournament or should I say watch someone fight in a tournament.
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