Sogetsu Luka.
A sparkling prince-type VTuber.
A VTuber (Virtual YouTuber).
She streams using an illustration as her avatar.
She's an independent streamer with 600,000 subscribers.
Her way of speaking is close to fake Kansai dialect, like "Eeh? Sou nan?" But it's not actually Kansai dialect.

She doesn't get involved in controversies like fights between listeners.
(If it's a post. In the comments, she might give a slight warning if it happens.)

She's never said it on stream, but she's actually never been in a relationship.