Interest Stacks

Example of an anime where existence of magical girls is not a secret.

The secret is out in the first episode in which MC's best friend learns about her being a magical girl; later few more people learn about this secret (family included).

An anime in which the girl can openly be a magical girl; everyone knows that she and some of her friends are magical girls.

An anime where existence of magical girls is not a secret, but the identity of who is a magical girl still is.

Another anime from the PreCure franchise where existence of magical girls is not a secret.

In this anime being a magical girl is a full-time job; you even need a license!

Well animated short anime where magical girls are known to the world.

An anime in which the girl can openly be a magical girl.

After the second season/movie it is revealed to Nanoha's parents, siblings, friends and their parents, that Nanoha and Fate are magical girls; the concept is explored more in the third movie.

While not a typical Mahou Shoujo anime it does have a world where both existence and identity of magical girls are not a secret.

A Mahou Shoujo parody in which the existence of magical girls is not a secret; identity of who is a magical girl is also revealed later in the story.

Ecchi heavy anime where existence of magical girls is not a secret.

The female MC is a magical girl from another world; she openly admits it, but no one believes her.

Starting from the second season existence of the symphogear system is not a secret; while it's not a common knowledge who is a magical girl, it's not a tightly kept secret.

An anime in which the existence of magical girls is not a secret and they are even celebrities.