It depends. On PC you can just download 0.14 and keep that folder forever if you ever decide to replay. If you play on mobile I don't think you can have both at the same time, so you would have to uninstall .18 and then download .14 again.
I was just curious, I have it on mobile. The game is amazing by the way a great mixture of story and lust, not your typical game. Keep up the great work I look forward to the next update and the completion of the game.
even if we would like to replay the entire game to check & see new texts and decisions, it is very hard to shutdown possibility of new relationships or let down your favorite girls expectations. We tend to keep on the good side and help people always.