Guardians 4

Guardians 4 (ガーディアン 4, Gadian 4) is a Hello! Project unit consisting of Mitsui Aika coming from Morning Musume, Kumai Yurina coming from Berryz Koubou, Nakajima Saki (Leader) coming from °C-ute, and Sugaya Risako, also from Berryz Koubou. It was formed for the sake of performing music for the Shugo Chara! anime. Their first single, entitled "Omakase♪Guardian" (おまかせ♪ガーディアン "Leave It to Me♪Guardian"), was used as the fifth opening to Shugo Chara!, while their second, single, "School Days" was used as the sixth opening. Then their third single "Party Time" was used as the opening for Shugo Chara! Party. "Going On" is being used as the second opening song for the said Anime.

Nakajima Saki was announced as Leader in the Making of PARTY TIME! (2009)

Members

 * Mitsui Aika (光井 愛佳) from Morning Musume
 * Kumai Yurina (熊井 友理奈) from Berryz Koubou
 * Sugaya Risako (菅谷 梨沙子) from Berryz Koubou
 * Nakajima Saki (中島 早貴)- Leader from °C-ute

Singles
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 * Title
 * Information
 * Release Date
 * 1
 * 1
 * 1

Singles
"Omakase♪Guardian" (おまかせ♪ガーディアン, "Leaving It to Me♪Guardian") | "School Days" "Going On!"
 * "Omakase♪Guardian": Opening theme
 * Main: Aika Mitsui and Risako Sugaya
 * Summer Has Come!
 * Main: All
 * Center: Aika Mitsui and Risako Sugaya
 * 2009.05.27
 * 2
 * 2
 * Opening theme
 * Main: All
 * Itsuka Dokoka de.
 * Main: Saki Nakajima
 * Center: Aika Mitsui and Risako Sugaya
 * 2009.09.02
 * 3
 * Party TimeGuardians4_party.jpg
 * Opening theme
 * Main: All
 * Information:c/w to Shugo Chara Egg!
 * Center: Aika Mitsui and Risako Sugaya
 * 2009.11.18
 * 4
 * 4
 * 4
 * Opening theme
 * Main: All
 * Information:c/w to Shugo Chara Egg!
 * Center: Aika Mitsui and Risako Sugaya
 * 2010.01.27
 * }