So this new magic is something Gray learned at Avatar, I guess they weren't so useless after all. Nice to see Gray is apologetic for all the crap he has done recently.
Dam Natsu stopped Gray from using it, It would be interesting if we had Gray erased from everyone's memories, there was a filler episode that did something similar with Lucy, I would love to see that and see how Juvia is the first to remember, and the power of friendship brings the memories of Gray back.
Natsu crying like that, is that something Lucy did recently, it seems like something Lucy would do.
And Acologia is back, whatever Zeref it is too late, we are all going to lose.
Personnel I thought these chapters were well done, though am disappointed in we are not going to see everyone's memories of Gray happen. That would have been interesting.