Hey question. Does megacock and megaboobs content can used permanently and if so, how can we got them?.
No. not yet...
They are underway! As a part of Mistrya's route I think...
One way to get it...
Is intentionally staying with Mistrya, Note this is a Bad End, so yes you cannot go around flaunting it yet, but yeah just stay and wait for Mistrya, over and over again and she will Break Lust, to the point that you cannot deny her anymore. And you get Mega-parts.