This is pretty much just a beat-off VN with some filler text to sort of explain the ludicrous reason this kid is banging his family. And that's fine. Just saying, I'd say this VN has a "setting", not a "plot." It's just porn (which, again, is fine).
In the configuration, I recommend turning the "BGV" setting all the way down. That's the constant whining and squealing that loops the entire time during a sex scene, even if you go AFK or ALT-TAB, it just keeps looping. Not the dialgue itself, just whining and squealing. Christ, that was annoying.
One thing I do want to mention is beware the risk of trying to ALT-ENTER this title to make it full screen. This is the first time I've had to hold the power button on my PC for 5 seconds to force it to shut down since learning I could force Task Manager to always be on top of other processes. Even that trick couldn't bring the Task Manager to the front so I could kill the VN process. If I had a hotkey to put the computer to sleep then wake it up again, that might have worked. But I disabled it because I kept accidentally hitting it. Heh. Anyway, just a warning. Save your game before trying.