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An excellent chapter, I enjoyed watching the three boys and the three leading girls leading.
Mashima with references to other authors when talking about the gods.
Lord God George- George Morikawa creator of Hajime no Ippo
God of Diamonds Tera-Yuji Terajima creator of Diamond no Ace
God of Fair Wind Seo-Seo Kouji creator of Fuuka
God of Eros Kai - From here I don't identify which one he refers to.
I liked to see how the girls devised the way to destroy the Gigantic Dark Bring, and without a doubt the fact that they make a Unison Raid in a way and that they take so easy to learn that they are fictional characters denotes their strength of character, that yes, There are references to Rebecca's Ether Gear.
The fight against Genesis is interesting, since Natsu, Haru and Shiki have proved quite skilled, which shows that although Genesis is powerful, its capabilities are limited by itself.
And well the battle is over, the final chapter will come to us at Christmas, hopefully it will be a long chapter and with a party where the girls show their affections to the boys with a good drunkenness, or at least a FT-style party. So many references suggest that in the future we will see more crossovers stories, since it is seen that Mashima enjoyed putting his different protagonists.