For those who aren't already aware, the #FE (Sharp FE) Stands for Fire Emblem. The Mirages that your characters team up with, as well as most of the bosses, are characters from the Fire Emblem series. So far I have enountered Chrom, Cain, Caeda, Tharja, and Virion.
I'm in the middle of chapter 3, and am enjoying it incredibly so far. It has the element weakness system of Persona mixed with the Fire Emblem weapon triangle for weaknesses. I am enjoying the characters so far, and the story has been very interesting. I'd be further along, but life has been so busy I have only gotten to sink about 15 hours in so far. Highly recommend it!