This was first Josei manga I ever read. It was good until 'looking glass' time.
I will back to read this again if my impression changed or not.
Edit: I guess you could summerize story as
'actors' who play roles in 'Alice in wonderland' to reach the end. It's a pretty nice concept. But, story is a bit drag.
Well, I only look at my favortie chapters to judge this. So, It may not be accurate.