Kai Mayuzumi
黛灰
Gender
Male
Age
21 (debut), 23
Birthday
9/28
About
Debut date: Jul 28, 2019
Graduation date: Jul 28, 2022
Fanbase name: ListeNerds
Illustrator: Ichijiku ([Twitter](https://twitter.com/1ji91109))
[Profile](https://www.nijisanji.jp/members/kai-mayuzumi) | [YouTube](https://www.youtube.com/channel/UCb5JxV6vKlYVknoJB8TnyYg) | [Twitter](https://twitter.com/mayuzumiX) | [Twitter (Sub)](https://twitter.com/BBash_Shell)
Mayuzumi Kai is a male Japanese Virtual YouTuber and a member of Nijisanji.
An aloof and talented white-hat hacker who began livestreaming as part of an undercover investigation. He rarely goes outside and orders everything online.
