Doesn't really seem like you "love this game" since you appear to "hate" a part of it which is there to explain "the vibe" of this unusual family.
It looks like you're still early on in the story. If it bothers you that much, here are few possible suggestions:
- Enable the clone version, vs the family version, so that Martha is no longer related to the MC.
- Skip past the Martha scenes that apparently bother you, because they're certainly not going to change.
- Accept that you don't actually like the overall tone of this title. You may enjoy parts of it, but a key piece seems to bother you.
The fundamental basis of this novel is about the MC's view of family, and their nonstandard relationships. An important quality of which is the MC's relationship with his mother. The scene you talked about, which is from quite a while back in the novel, is relatively important (pardon the pun).
It's used to explain character dynamics, Martha's attraction to the MC, even if subconsciously, and to give some elucidation. Your choice may have been for the MC to not pursue a relationship with Martha, but that doesn't stop her from being interested in him, and at that point they haven't talked about it yet. The MC being polite, not wanting to make his mom feel more uncomfortable, and not really being concerned about nudity, are all things that get established with that one quick scene. That doesn't make him a "wet nuddle" it makes him a considerate human being, he's actually very protective of his family, as you will see should you choose to continue with the story.
As a quick side note, arguing with the author/developer to try and get them to change their story isn't productive.
Sorry to say, if the above doesn't make sense, this VN probably isn't for you.
Thankfully there are many more out there that might be. You can do an advanced search and add incest to the Without tags field so you don't see anything else with mothers and sons.
I'm amazed the Martha fans haven't bombarded the thread ...yet