She is, it was an early doc, the idea got scrapped pretty fast, but the fact that he was even going to go through with it shows he either didn't read her doc at all or skimmed it and didn't care.
The characters that Takahiro can have sex with are Miko, Mai, Azami, Yuzu, and Kiri, you can regularly sex the former two, get a couple optional scene with the latter two, and Azami is off the table because he "didn't want her to be just another woman the MC can screw," despite her currently only existing to be motivation for Takahiro.
According to the Fen forums and Patreon they like this new direction. I want to like this game and sometimes I do, but really should have been it's own IP, because it has yet to live up to the first game.