how do you get back the option choice at the start where it asks either you want to read everything or skip to the lewd parts, I thought it will be at every start new game, but it seems not the case :/ also it's not in the preference.
I'm a bit confused, as that option was never in there. If you just skip to the lewd parts, then you're not the audience I created this game for, and while you're absolutely welcome to do so, I'm not gonna bother putting in an option for that. Besides, the tab key works a charm in that case.
There is a dialog at the start where I tell you that there's a lot of story to the game, and if you just skip from nipple to nipple it won't make much sense and you'll come off not enjoying the experience very much (and possibly turn up here to complain about it loudly), and I suggest you might just want to spend your time having fun with some other game more geared to that type of gameplay. If you are adamant about it, I offer to unlock the gallery so you don't have to bother with skipping in the game.
At no point is it skipping content in the game itself based on a choice there.
That dialog goes away if you reply by saying you enjoy reading, since I don't want to bother my target audience with that bit of fourth wall breach. Since the choice is stored in the persistent file, clearing that should restore the dialog.