Kip. 2: Top Idol! Rampage at a Concert!

2

Ryoma, Takasugi, and Katsura begin playing together as a band. Not only are they completely unpopular, but in a city where all music other than Heaven's Song is prohibited, they lose more and more places where they are free to sing their rock. Completely stumped, they go to a Shinsengumi concert for ideas. (Source: Crunchyroll)