JOKO began Twitter activities on 4 July 2022. Her model was teased on 31 January 2023 before being unveiled on 13 March 2023.
JOKO created her YouTube channel on 19 May 2023. She posted her first cover on 14 June 2023.
JOKO officially made her VTuber debut on 6 August 2023 on Twitch.
A half-witch child was born to a witch and a human who fell in love centuries ago. However, because the human realm despised witches, she was raised in the Magic World by her mother. When she returned to the human world, she was enthralled by music and became determined to learn the magic of music.