Glass no Kamen, Cat Street Recommendations
Cat Street is very short and sweet; it's more about the main character being outcasted for being so good at acting at a young age and than having her role in a play stolen from her. It's not something you should read if you want to read something long, but if you want something semi-short and sweet, than this is the manga for you. It reminds me of Glass Mask with the acting part of it.
After becoming blacklisted/isolated from the entertainment world, both heroines show their strength and love of acting in order to perform again. They sink from tragedy & depression and learn to rise back to the top.
Generally, these mangas are wonderful to read. The main characters are interesting and their dramas will give you twists & turns that you would never expect. It's true that Glass Mask is MUCH longer, but nevertheless, it would still get you hooked just as much as Cat Street.