Character: sameko saba (vtuber)
An independent, fish-themed virtual youtuber. Her fans are called Kaniki. She, in rapid succession, called herself a catfish, dogfish, and foxfish, leaving the nature of her animal ears deliberately unclear.
Saba is a girl with very long blonde hair, fuzzy animal ears, and a big blue fish tail. She has bright cyan blue eyes.
Past life spoilers:
Saba is the graduated former talent for Gawr Gura of Hololive, who previously worked under Senzawa.