You need to use Wrestler X's bleeds on that node. Also there is a bug that you can exploit, check this:
https://forum.skullgirlsmobile.com/threads/master-difficulty-story-mode.5983/page-2#post-37266
Name of this catalyst is "Electrostatic Field"
Fire Starter - [Fire Element Defenders]: Gain 1 stack of PRECISION every ? seconds. Landing a CRITICAL HIT grants permanent ENRAGE