Sailor Moon - Aphmau AU

A clumsy 13 year old girl named Aphmau, 'Cookie', Uwu Small Potato Bean encounters a talking cat named Luna who says that Aphmau is the Soldier of Love and Justice, Sailor Moon. Aphmau must now fight evil as Queen Beryl and the evil Negaverse have begun their attacks on Earth.

Or,

One day as she's running to school from home, a young girl named Aphmau, 'Cookie', Uwu Small Potato Bean runs into a cat being tortured by some children. She chases them off and removes a bandage from its forehead, finding underneath what she calls a "crescent-shaped bald spot". Meanwhile, the evil Queen Beryl of the Dark Kingdom is planning with her servant, Jadeite, to steal energy for Queen Metalia.