Guardian 4 are (left to right): Nakajima Saki (C-ute) Sugaya Risako (Berryz Koubou) Mitsui Aika (Morning Musume) Kumai Yurina (Berryz Koubou)
"Omakase! Guardian" is set to hit stores on May 27, 2009. This video is just a 90-second preview of the song, but it's a good teaser of what's to come. We'll post the full official PV once it becomes available. In the meantime, make sure you check out their official site: http://guardians4.com/.
The end theme of "Shugo Chara" is also from an H!P act: Buono! Here's a preview of their upcoming single, "MY BOY"