Responses
No I think the sisters refer to Zera and Mavis because they were like sisters before if you read the spin off that talks about how Fairy Tail came into being
no, the main sisters thing here was yukino and sorano...there wasn't anything spectacular about mira and lis that they had to mention in the title
so sisters referred to yukino & sorano lol xD & mirajane algeria, wow i'm speechless for a sec..i mean THAT THING WAS A DEMON??? I THOUGHT IT WAS A BLOODY CURSE SPELL OMG (╯°Д °)╯╧╧