[truehappiness]

She's someone who influenced Ayu a lot during her debut.

Apparently Ayu met her at a restaurant or some bar or something...

And they became friends [this was a bit after her debut] and she was one of Ayu's first female friends...

Then they had this whole confrontation where Ayu locked herself up in an apartment hiding from the record company, and then Natsuki came knocking at the door like crazy wondering what happened~