Sphere

Sphere is a Japanese seiyuu unit made up of Haruka Tomatsu, Minako Kotobuki, Ayahi Takagaki, and Aki Toyosaki. Built around the voices and personalities of four well-known voice actresses, the group has become a recognizable name in the anime music scene through its polished pop sound and strong live presence. Over the course of their career, Sphere has released 22 singles, 5 albums, and one best album. Their discography reflects a consistent run of releases that helped establish the group as a major seiyuu-driven act rather than a one-off collaboration. For listeners searching for anime-related Japanese pop, Sphere stands out as a group that bridges voice acting and music with a clear identity. Live performance has been central to Sphere's growth. On November 23, 2010, they performed at Nippon Budokan, and they later celebrated their 5th anniversary there as well. In 2014, they mounted the Eternal Live Tour at Makuhari Messe, followed in 2015 by Sphere BEST Live in Yoyogi 1st Gymnasium. The following year, Sphere held Sphere Fes, a two-day event lasting six hours, showing the scale of their live production. In July 2016, they also performed at Anisong World Matsuri in Los Angeles, further extending their reach beyond Japan. Another live event was held in March 2017, adding to a career defined by steady releases, major venues, and a strong connection to anime music audiences.