Railgun S, The Sixth
This episode had a great beginning, though it's kind of a shame that Accelerator's fights have to be so brief. The rest of the episode really emphasized a concern I had before the season began--we know how the Sisters arc goes (That is, unless you haven't seen or heard of Index. (Though that being said, everything ends the same way in Index. (By which I mean Touma punches everyone on the face. (And now you know)))) and Kuroko, Uiharu and Saten just aren't at all involved. It's kind of odd to have an arc in which all but one of the main characters are pushed to the sidelines, but I guess it's working so far. The next episode seems to focus on those three, at least....
Still, good episode.