Responses
I think it's a reference to other dating games or BL manga. Though I haven't played any of those games, so it does seem pretty out of place. A lot of dating or otome games like to include forbidden options or bad endings. I would think most would have one incest route at the most. If this were a real game, players would complain that it's unbalanced.
I closed my eyes to get to this comment section, only on chapter 30 so no spoilers please(that don’t pertain to my question) but WHY is it possible for Jerry to marry his brothers??!