Naka is literally saying "lesson" and Harusame "remembering". So I use "practicing" to match them up. Feel free to edit if there are any better translation.
Naka-chan is practicing a lot! ♪2-4-11 of Love~You all look busy. What are you guys doing?HeeeTHUMP!HieeeePOI!Shiratsuyu-class.Naka-chan, you look busy. What are you doing?...Huh?Tomorrow is Naka-chan-san's concert, so...Yeah!
Naka-chan will work hard for everyone ☆Weeelll,
tomorrow I'll be doing a concert in front of the 2nd DesDiv, so...I see. It would be nice if she likes it.Is that so... It would be nice if they enjoy it....w-we are practicing our cheering call......to return her efforts with a proper cheer.