>>9370518Beatani is a Japanese indie vtuber who tried streaming to her fellow Japs and discovered that they don't watch indies. So, she decided to stream to westerners instead since she (barely) knows English and is a big westaboo who's interested in imageboard culture. She's probably certifiably insane, but it's the entertaining kind of insane, and she has a great sense of humor. It's also endearing to watch someone try their best to communicate in a language they barely know. Her fans being nuts is just the usual "like streamer, like fans" rule. They're dedicated to her because she goes to a lot of trouble to interact closely with them.