To be honest, I don't want Negi to reveal that he knows that she's the fake Asuna alone. I wish Mana would have picked up on it or Takamichi or something.
Either way, I just wish /someone/ else would expose her aside from Negi, but knowing him, he's probably going to question her, ask her who she's working for, find out it's Fate, and then fight against her for a few chapters to try and get information about Fate.
That stuff aside, I really liked this chapter. Nice to know that everyone is back together (for the most part) and forming a plan to rescue Anya and bringing everyone who "vanished" back.
I really like how Nodoka explained what she found out. That was such a nice Nodoka and Negi moment. She went back to her usual self cause of Negi. lol Still crazy, but I like the whole Negi x Nodoka thing, even if it is friendship (from Negi's side anyway ) lol