These anime feature young, generally school-aged girls as defenders of love, life, and justice. They typically stumble upon the source of a magical power, or are granted one by allies that are aware of evil forces on the rise. Often by using a special item or with the help of a magical familiar, these characters are able to transform into an alter-ego ready to cause mischief or fight their foes.
Shoujo (少女), translated as "young woman", is a demographic aimed at teenage girls. The most iconic and influential Shoujo character designs come from the early 20th century, where girls and boys alike were drawn with huge eyes. Shoujo is the counterpart of Shounen, a demographic aimed at boys and young men.
Yuri is a genre that depicts homosexual relationships between women. Japan typically uses this single category for all forms of these relationships, sexual or not. In the West, the term Shoujo-ai categorizes stories that focus on the emotional aspects of the relationships, while Yuri categorizes more of the sexual aspects and explicit content. As Anime-Planet's audience is mostly based in the West, we use the Western definition for both Yuri and Shoujo-ai.