A voice actor unit “Sphere” (consist of Kotobuki Minako, Takagaki Ayahi, Tomatsu Haruka, and Toyosaki Aki) has established a YouTube channel “Sphere's 4colors LABO” on May 15, 2020.

“Sphere” is a female voice actor unit affiliated to MusicRay'n, consist of four members, Kotobuki Minako (Known for Isabella York from “Violet Evergarden Side Story: Eternity and the Auto Memories Doll” and Blue Rose/ Karina Lyle from “TIGER & BUNNY”), Takagaki Ayahi (Known for Yukine Chris from “Senki Zesshou Symphogear” and Kandori Seira from “Major 2nd”), Tamatsu Haruka (Known for Yuuki Asuna from “Sword Art Online” and Anjou Naruko from “Anohana: The Flower We Saw That Day”), and Toyosaki Aki (Known for Hirasawa Yui from “K-on!” and Inuyama Aoi from “Laid-Back Camp”).

Since the establishment of the group in 2009, each member has continued their career as voice actors and took parts in various activities, having the CD release and Live event as the main, appearing on music variety programs, releasing a photo book, and airing of the live-action drama “GEKIDAN SPHERE”.
One of the members, Kotobuki, is currently live in UK and has opened her private YouTube channel “Kotobuki Minako's ~Maji Kotobuki!~” on Apr. 21. The channel sent a message from Kotobuki to the fans in Japan.

On the newly established YouTube channel “Sphere's 4colors LABO” is planning to broadcast a variety show type of videos, as the voice actor unit “Sphere”, and will be challenging various projects that they've wished to try just like a “Testing Lab”. Please look forward to the updates.