Shugo Chara! (しゅごキャラ!), also known as My Guardian Characters, is a Japanese shojo manga  series created by the manga author duo, Peach-Pit. The story centers on elementary school girl Amu Hinamori, whose popular exterior, referred to as "cool and spicy" by her classmates, contrasts with her introverted  personality. When Amu wishes for the courage to be reborn as her would-be self, she is surprised to find three colorful eggs the next morning, which hatch into three Guardian Characters: Ran, Miki, and Su.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—red, 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 each have a Guardian Character of their own.  In the seris Amu falls in love with Tadase and Ikto and has to chose which one she wants to be with. Later,they recruit Amu as the Joker to search for X Eggs and X Characters, the corrupted forms of people's 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 an all white egg while normal heart's eggs have a yellow heart and yellow wings on it.

Later on in the series a fourth (yellow) egg is born, this egg contains the Guardian Character Diamond of Hinamori Amu's set. She is only seen a few times in the series. However due to Amu's mixed feelings she becomes an x character, until about halfway to the end, where she was purified of the X on her, and then would appear in times of heavy crisis.

Under here you will find the theme song to Shugo Chara
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I do not own the lyrics, song, or images.