Arashi to sing Lucky Seven?

On Monday, Jan 16, Matsujun's new drama Lucky Seven begins, so far there hasn't been an announcement that Arashi will sing the theme or ending song for it. But I'd be very surprised if they are not doing it!

But then today I finally watched some promotions for it.. during my break from studying.

And I heard them singing, I have no idea what the song is called.. but I'm excited to hear the whole version!!

*Still waiting for the official annoucement...

Let another Arashic year begin ^^