Ah, I see.
Oh i heard a diffent story about this: Natsume is a nickname that her mother gave her after Natsume in Alice Academy (because of her tomboy's character i guess). She used to use the name Natsume Hibiki in her namahousou and 96neko for her video uploading which made confuse for her fans. So she decided to refer her as only 96neko. And i guess Hibiki is her real name. But like Starikun said if she doesnt want us to call or mention that name anymore we will respect her privacy.
Natsume Hibiki is actually her former name on a different singing site (before she was active on NND), and it carried over somewhat like anon mentioned above, into her NND activities before she stopped using the name. While Hibiki is a real first name, it is also a 'cool singer name' since it means 'to reverberate', so it's unlikely, though possible, that it's her real first name.
I don't know if 96neko is a guy or a girl so I will classify he..she..it as a hideyoshi (Baka to Test refrence).
She's a girl!
If you don't know the gender of someone, you can just use "them/they/their", since it's gender neutral. Plus it's rude to call a living being "it". ^^'
You can obobviously tell by her voice that she is female. BTW I know when Hideyoshi go to baths, there is a room just for him.
in real life she is a girl but her oc is a guy and dont worry i make the same mistake
96neko is such a good singer! so is Mafumafu, Soraru, Amatsuki & etc.