I highly recommend Girl in the Birdcage

I was so impressed by this comic. It's a really different kind of yuri. While there are a lot of cute scenes (and the main character is cute as hell) it also can be pretty dark.

The story deals with depression, bullying, abuse and the conflict between someone who is highly talented and someone with an inferiority complex. It also shines a light on the negative things about the art industry (I think there was a bit of creative license, but the fact that the art world can be ruthless and often only people with established connections can make it is very true).

At the end the author explains that the theme is change and I think that was accomplished well. I felt really moved reading the last several chapters.

The story isn't light and fluffy like a lot of yuri, but as someone who enjoys a bit of angst with their fluff I loved it.