Shizune Sora

 Shizune Sora (静音ソラ, シズネソラ) also known as Isora Manami (いそら真実) was a female Japanese Virtual YouTuber associated to the GREE REALITY app. She was designed in a contest held by LisPon and Pixiv.

Retirement
She apparently retired on 28 February 2020.

Trivia

 * A serious GREE corporate presentation was made more interesting when she was invited . Whether the nearby businessmen's faces were showing pain, attemping not to laugh, or both, is up for debate.