I usually judge an anime based on how much I enjoy it.. and I think the story, artwork and music are at least at the higher tier level. Although I won't say that the story is like great, but it is workable with it's twist. The music and the harmony of the voices (The idols) is top tier to me. If you're watching just to relax and not think so much, I think it's kinda good.. The story development is kinda making progress and I do find myself liking characters like Azu more now.. If you're someone who is working and wanted something just to relaxand enjoy Japanese music in general (Not all the songs are very idol-ish) , I think you can try for it.