Code Name wa Sailor V

Codename: Sailor V (コードネーム は セーラーＶ, Koodoneemu wa Seeraa Bui) is a manga series written and illustrated by Naoko Takeuchi. It follows 13-year-old Minako Aino who uses her newfound magical powers to fight injustice guided by her feline companion Artemis.

The positive reception of its first chapter spawned the entire Sailor Moon franchise.