User blog comment:Plasmaster/Neptune Joins the Party!/@comment-12498802-20160923161239/@comment-25275196-20160923233819

the series is technically just "Neptunia" actually. The "Hyperdimension" was dropped a while ago. It was created by Compile Heart, and published by Idea Factory International.

As for the FF song. As it's a series where the 4th wall doesn't exist, Neptune goes as far as to send up absolutely everything. Seriously, it puts Deadpool to shame, with the amount of Meta jokes there are.