Planet Sphere (sometimes written as Pl@net Sphere, and also known simply as Sphere) are a Japanese electropop idol group
that formed in 2009. The group consists of young anime voice actresses, and the group are currently one of the most well
known newer idol groups out there. Since the group consists of anime voice actresses, many of their songs were featured on
various anime throughout the years, including First Love Limited, Demon King Daimao and Sora no Manimani.