I'm wondering who the two girls with the bows and arrows are. I can't quite make them out, but I can see they're aren't Yui and Moa. The one on the right looks like it could be Rinon, but who knows for sure. I was curious what "Flet's" is so I looked it up. Looks like it's an internet provider whose company, NTT East, covers over a dozen of Japan's prefectures. www.flets.com/english/
They are Yui and Moa. If you watch Moa funny clips here in youtube, there's behind the scenes from this commercial 1:05 where she hit herself with the placard when she turned it lol
I've since learned that in October 2011, all twelve members of Sakura Gakuin took part in the "Angels of Light" advertising campaign for Flet's internet services. There were the television commercials like the one included here, but there was also a RU-vid channel featuring promos with all of the girls. At 1:13, I think the girl on the bottom right is Rinon, and the other is Airi.
Kinda goes like this: Su happy. Yui sad. Yui happy. Moa and Yui happy. Su very happy. The three of them become ROCK STARS all over the world. Yui quits. Moa and Su sad. The show must go on. Moa and Su happy again.