awakening mari is a bit of an waste. Even bernice which is a whole rarity lower then hear is a better tank overall. Eventually u will have to awaken bernice , because u will need a more stable ank then mari (which is skill dependant ) , and honestly speaking , there aren't that many instances where you will need 2 AW heavies (or instances where mari even outperforms even samurais as an offtank outside her skill)


Then again , you might not have bernice at all , in which case mari is a good enough tank for the moment