wtf! I haven't played in a long time, is this 'path' optional?
Seriously, I don't really appreciate netorare
Netorare in this game is missable, not optional.
You need to use the wiki. Whether you see NTR or not depends on your stats and order of operations. Click the wrong room at the wrong time with the wrong stats, and you go into NTR route.
Or vice versa, if you want NTR you can end up missing it.
There are no explicit choices here. Rather, with the wiki, you can manage to avoid all the scenes.
Wiki is also how you avoid things like girls leaving forever or getting murdered
Generally, most NTR is avoided by hyper focusing each girl to raise her stats as fast as possible. So people with that playstyle are less likely to encounter it if they are not following the wiki.