This mod increases the stats of most enemies and changes the AI of bosses past the 5th Palace. Regular enemies and Mementos bosses will have their attributes (St, Ma, En, Lu, Ag) increased and their HP multiplied. Moreover, Mementos missions and Palace bosses will yield much more EXP and yen than usual. If you consider using it, I recommend you play on Merciless difficulty: the x3 multipliers on Critical and Technical hits shorten the fight with high HP enemies.