You will be able to customize the dice for weapons, armor, and accessories, with better gear being more flexible, so there's a lot of control you have over just how RNG or not RNG the dice will be.
There are a lot of sexual scenes, so you won't be able to avoid all of them. Many of them have choices on how they play out, so you can avoid some of them (or play into them) with the right combination of choices and other factors.