Guardian Character!

, also known as My Guardian Characters, but commonly known as Shugo Chara!, is a Japanese shōjo manga series created by the manga author duo, Peach-Pit.

Shugo Chara! is serialized in the magazine Nakayoshi and published by Kodansha in Japan. Del Rey Manga has licensed the English language manga rights, releasing the first volume on March 27, 2007. It won the 2008 Kodansha Manga Award for best children's manga.

Shugo Chara! has also been adapted into a fifty-one episode anime television series of the same title produced by Satelight under the direction of Kenji Yasuda and debuted on October 6, 2007 on TV Tokyo On July 20, 2008, Anime News Network reported that the Shugo Chara! anime would be continued for a second year under the title '''Shugo Chara!! Doki—''', the first episode airing on October 10, 2008; the official anime website later announced an October 4, 2008 start date.

From October 3, 2009 to March 27, 2010, Shugo Chara! began featuring another series. The new program, Shugo Chara Party! containing '''Shugo Chara!!! Dokki Doki and Shugo Chara Pucchi Puchi!''' follow the current anime series as its power-up. .

Plot
The heroine of the story, Amu Hinamori, is a student at Seiyo Elementary. At first glance, her classmates refer to her as "cool and spicy" and rumors speculate about her personal life. However, her real personality is that of a very shy girl who has trouble showing her true personality. One night, Amu wishes for the courage to show her "would-be" self, and the next morning finds three brightly colored eggs—Pink, Light Blue, and Green—in her bed. At first, she is alarmed, but realizes she must have really wished to change. These eggs hatch into three Guardian Characters: Ran, Miki, and Su. The Guardian Characters aid Amu in discovering who she truly is and help fulfill Amu's dreams. Amu's life becomes much more complex as she struggles to deal with her "would-be" selves and the Seiyo Elementary's Guardians, who recruit Amu as the Joker to search for "X Eggs" and "X Characters", the corrupted forms of peoples' dreams.

Meanwhile, the Easter Company is extracting people's eggs in search of a special egg called the "Embryo". The "Embryo" is believed to grant any wish to the one who possesses it. However, the process creates "X Eggs" and "X Characters". It is described as a white egg with a heart and yellow wings.

Later on in the series a fourth (Yellow) egg is born, this egg contains the Guardian Character Diamond. She was only seen a few times in the series, until about halfway to the end, where she was purified of the "X" on her, and then would appear in times of heavy crisis.