Sailor Moon is a Japanese manga series written and illustrated by Naoko Takeuchi. It was originally serialized in Kodansha's shōjo manga magazine Nakayoshi from 1991 to 1997; the 60 individual chapters (later reorganized into 52), along with several side stories, were compiled in 18 volumes.

The series follows the adventures of a schoolgirl named Usagi Tsukino as she transforms into the eponymous character to search for a magical artifact, the "Legendary Silver Crystal". She leads a group of comrades, the Sailor Guardians, as they battle against villains to prevent the theft of the Silver Crystal and the destruction of the Solar System.

https://en.wikipedia.org/wiki/Sailor_Moon