Board Thread:General Discussion/@comment-3245042-20140106213119/@comment-8986886-20141008043903

Perhaps the "deal" refers to a prerequisite for a "death blow", similar to the mechanics of Suzumebachi's Nigeki Kessatsu, or Katen Kyōkotsu's Irooni. If that's the case, then Askin would be able to inflict much greater damage, as long as a specific condition is met.