LOL, it was bugging me so much that I went back to check!! I think he's standing right at the back (from the group shot on page 2). I can see Shino, Yamato, Kakashi, Naruto, Kiba & Akamaru, Sakura and Hinata, and then there is somebody with dark hair right at the back that I assume is Sai. There wasn't anyone else with them, was there???