Sailor Moon. Probably one of the biggest names in Japanese comics, or mangas. Though most are likely familiar with the anime, or Japanese animation cartoon (clip seen above), Sailor Moon began as a manga that originally ran from 1992 to 1997. It was created by mangaka Naoko Takeuchi and really popularized the theme of the "team of magical girls." This series ran as a TV anime as long as it was published in manga and produced three films. Not only that, but this series has been so influential, it spawned a stage musical in Japan that ran from 1993-2005, a 49-episode live-action TV series from 2003-2004 (I've watched it online. It's epic), and Sailor Moon videogames, mostly released in Japan. There are dolls, t-shirts, toys, art books (Oh, how I pine for one of those...), and the list goes on and on.
The story is based around Usagi Tsukino, known as Bunny or Serena in English. She's a clumsy, immature, whiny 14-year-old student at the beginning of the series. She is discovered as Sailor Moon by Luna, a talking cat with a mysterious crescent moon on her forehead, and is forced to fight evil which initially, she does NOT want to do. However, over the story you see her evolution into a strong, compassionate soldier for love and justice as well as the evolution of the friends she collections along the way. Her immediate 4 best friends Ami (Amy), Rei (Ray), Lita (Makoto), Mina (Minako) are her co-soldiers Sailor Mercury, Mars, Jupiter, and Venus. Oh, and then of course, there's Tuxedo Mask, Bunny's love interest. ;)
I'm not going to tell you the rest because you need to go watch/read for yourself! (W
Tuxedo Mask: Hey, have I ever let you down?"