Agree to disagree. I'm sure it's Sakura. She was the one asking about the situation, it's logical for her to react after having an answer.
http://www.senmanga.com/Naruto/675/6/
Kakashi told Sakura about Madara taking his eyes here. and at the bottom of the page we see her realsing what will happen now that Madara is in the Kamui world.
http://www.senmanga.com/Naruto/675/7/
And the next page we get a flashack of Obito telling her about Madara getting both eyes if Black Zetsu takes over.
http://www.senmanga.com/Naruto/675/14/
This page we see Sasuke mention how Madara can come back any time.
She's already been given all the information in previous pages. Madara took Kakashi's eye, (page Six) Madara will get both Rinnigans if eye not destroyed (page seven) and Him making coming back any second, (page 14) Her reacting to Sasuke's statement makes Zero sense, Naruto on the other hand doesn't know what happened to Kakashi's eye, he doesn't know where Madara is, and that he now has both eyes, so he is the only one that is not in the know how, so the only one who needs to react.
Edited by harry4e, 28 May 2014 - 05:36 PM.