Princess Tutu, Yuri Kuma Arashi Recommendations
Mysterious entities grant our cast of nonhuman main characters the ability to transform into humans so long that certain conditions are met. These seemingly lighthearted anime take place in a an environment full of mystery and fantasy. The stories revolve around factitious fairy tales which are referenced throughout the anime and are chock-full of symbolism.
At first these series seem lighthearted and cute, but reveal themselves to have darker themes. Intense love and romance is a central device. Both stories are told abstractly and non-traditionally. Both are beautiful.