The future arc's main purpose is to tie all the loose ends together. It quickly becomes a battle royale anime with little to distinguish it from any other. The writing has kinda got that Danganronpa flair but it's also someone muted as the plot takes a front seat here.
There's a whole host of new characters. But don't waste your time remembering most of them, you can guess whose going to survive from halfway through episode one and very few of them have any real characteristic worth noting. The anime knows this and rarely holds suspense on this stuff, again it all points to the overarching plot from the first Danganronpa game.
Watch it for the plot, to give yourself closure if you, like me, have got sucked into the Danganronpa universe.
