Episode 3 starts out with Nagisa, Yuka, and Orine summarizing what has happened to them so far in one line. They are surprised to see so many girls that have been accepted into the selection round.
The person who walks in is Katagiri Tsubasa.
Orine is surprised to hear the word "manager". (To those who don't know, the manager position in AKB48 is held by Togasaki, who has helped Aki-P create AKB48 from the ground up whether it be finding the location for the theater to be built, listening to fans' feedback, or delivering important announcements. He is revered by AKB48 members, and fans alike for all his hard work. It's only fitting that the importance of the manager position is also reflected in this anime. Of course recently, Takamina has become general manager of AKB48 as announced in the shuffle at Tokyo Dome.)