From Shinnen:

Band for Life!'s energetic Kuroko thinks of the popular band 'Nitro Pop' as her enemy because there was once when she was ignored by their unsociable vocalist cum guitarist, Niko. However, their songs and performances are so captivating that it's hard not to be mesmerised by them... Turns out there's a plan for them to perform at the same live event...?! With pure funk beat that's guaranteed to capture your heart, the emotional rock romance makes its grand appearance!