Other than her being the one that really ushered in the Vtuber craze, being the first, she is just... I don't know, everything that you expect from a professional entertainer. She is cute, funny, a very good singer, she's outgoing and friendly, can dance, handles her 3D model extremely well, and is very business savvy. Other than the unusual directions that her agency decided to go in with the Ai character, which may have really damaged Ai's growth which she is currently trying to repair, she's been pretty much the queen of vtubing in Japan since 2017. Nobody else gets the mainstream attention she does, the public perception, the sponsorships, the advertising, the invitations to events, and so forth. No other vtuber can claim the success that she has. Recently her goals have been to try to reestablish her fanbase in the western world, which is partially what the Hello World and the recent LA / NY concerts were about. She's also very active on TikTok now.