The group Sphere (スフィア) is made up of Kotobuki Minako (寿美菜子), Takagaki Ayahi (高垣彩陽), Tomatsu Haruka (戸松遥), and Toyosaki Aki (豊崎愛生). Sphere was formed in the spring of 2009, and they have released many CDs and peformed in many events and concerts.

Sphere has released the following CDs/DVDs.

• Future Stream (CDsingle + DVD)
• Super Noisy Nova (CDsingle + DVD)
• Kaze wo Atsumete (CDsingle + DVD)
• Realove:Realife (CDsingle + DVD)
• Now Loading...SKY (CDsingle + DVD)
• Moon Signal (CDsingle + DVD)
• Hazy (CDsingle + DVD)
• Let Me Do! (CDsingle + DVD)
• High Powered (CDsingle + DVD)

• A.T.M.O.S.P.H.E.R.E (Album + DVD)

There was a special TV program about Sphere broadcast on M-On TV in July, August, and September of 2010.

Sphere has appeared in many magazines, including some of the major weekly and monthly comics magazines. Some of them are: Shounen Champion 2011 No.17, Shounen Champion 2011 No.48, Gekkan Young Magazine 2012 May.

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