Pretty sure it's just a Bocchi the Rock in Powerpuff fan piece.
MangaDex Forums
Mangamoz
Oh Bocchi, never saw it. Not a fan of musical stories of any media, be it western or japanese. The plot is almost always the same.
No wonder I didn't recognize it.
No wonder I didn't recognize it.
Is this official or just a funny powderpuff artstyle version of some manga I don't recognize?