I hope the MC's molestation of his mom leads to a negative outcome for their relationship in this game. It would gel better with the rape as far as the mother is concerned, she should be very sensitive to non-consensual acts in a bad way.
The romance between mother and son should grow through emotional intimacy like it does if you ignore the molestation opportunities, otherwise the rape is undermined and only looks like it's inclusion was for artificial shock factor.
Just my opinion on story coherence. I really liked the MC's reaction to hearing of it though, most sons would absolutely be cocking the nearest gun in the same situation, unlike most MCs in these kind of games,
I really like this game because it actually seems to have characters rather than just be a series of kink-exploitation scenes tied by a thin narrative of the MC having a big dick and being into every decadent act known to man.
I like the MC, he can be played like someone who genuinely cares and doesn't feel like a horny boy out to defile his mommy.
I abso-fucking-lutely despise NTR, but I didn't mind Hannibal, he seems like a genuinely good dude who, if this wasn't a porn game with themes of incest, I would definitely push the mom towards for the sake of her happiness. He was also non-intrusive and easy to chase away which I really appreciate as a player, there was no ruthless flirting between him and Ema and the MC didn't have to aggressively stake his claim, if I hadn't been aware of NTR as a kink I wouldn't even have considered him a threat, which is as it's supposed to be in games not specifically catering to that kink.
I came looking for romance between characters I like and can relate to, and I'm not disappointed for once. Well done.
I didn't play the game as a sandbox, but I hands-down prefer the VN style in most cases, oftentimes the sandbox is pointless and just tacked on to artificially lengthen the game. A gallery would be nice, though.
People into any given kink are a minority, and appeasing one kink will usually make the story less immersive to those that aren't into it. Don't try to appease these vocal minorities' sexual appetites if you care about the story, the way to a person's heart is never through their genitals.