The Back Bay was invaded last week. The Anime Boston 2016 festival at the Hynes Convention Center caused more than a few neighbors to do a double take as elaborately consumed characters made their way through he streets and byways of the Back Bay on Friday, Saturday and Sunday. In the photo to the above,Nick Joudrey, Joel Ferrero and Michelle Joudrey, of Pittsfield, show off their elaborate get-up while waiting in line on Saturday morning