A virtual YouTube persona ("VTuber") created by hololive, perky, English-speaking pop-rapper Mori Calliope debuted on the platform in 2020. She had two million subscribers by the time she delivered her first solo album, UnAlive, in early 2022. The follow-up, Sinderella, appeared before the end of the year and landed in the Top 20 of Billboard's Heatseekers chart.