Pl@net sphere, officially スフィア, is a Japanese idol unit consisting of Minako Kotobuki, Ayahi Takagaki, Haruka Tomatsu, and Aki Toyosaki (寿美菜子, 高垣彩陽, 戸松遥, and 豊崎愛生), four seiyuus with Sony's Ray'n agency.
The group debuted in April 2009 releasing their first single "Future Stream". As all four are voice actresses, their music is frequently featured as tie-ins to a variety of anime series.
|2||Future Stream||2,351 listeners|
|3||MOON SIGNAL||1,963 listeners|
|4||Super Noisy Nova||1,904 listeners|
|5||Now loading...SKY!!||1,768 listeners|
|6||HIGH POWERED||1,516 listeners|
|7||Non stop road||1,499 listeners|
|9||Dangerous girls||1,206 listeners|
|10||Neo Eden||1,206 listeners|