Let's keep is short. It's good... until episode 8-9, that is.
Last few episodes is completely messed up and doesn't follow well with the rest of the anime.
Really thought there was gonna be more singing, idol-ish stuff, acting stuff(as shown during the first ep). But the whole genre shifts as we reach the end, which gives off a poor aftertaste, like the bitterness felt from medicine except this medicine doesn't heal you.
I have no idea what happened to the production side of this series, but I'd rather get an incomplete, actual, ending instead of what we have now.
I would say, just watch it till ep 8-9 and treat that as the end. Cause I regret watching the last few episodes very much.