Sorry, guys, but I won't be able to please everyone. I'm here to tell a story, although the game's theme is pornographic, there is a really cool plot behind it. The game is too complex for me to create a "Perfect" reality. I try to bring the characters as close as I (a mere human) can to real people, they will come with their problems, loves, impulses, flaws, qualities and motivations. You can try to break it and mold it to your shape, but it will be (in my opinion) impossible to keep everyone under "restraints". So, those who cannot idealize this and accept it as it is, I ask you to open your heart and mind and try to understand the game as it is.
You can try to keep everyone under your control, but I won't guarantee that the game will be careful about that. There are characters and stories that are too complex and are fundamental for the plot to follow.
The game is not just about being NTR or not, the characters are following their lives and they already had lives before you arrived in the Capital. You can influence their lives, but they also influence your paths! If I told you that it is possible to make all the characters love you unconditionally, I would be lying, because there will be bad characters, antagonists, you can also relate to them, but putting your own integrity at risk.
Linsey hates cheating, which is why she dumped Bret. But your aunt won't become your toy overnight, she's a powerful woman and doesn't care about you feelings! (At least not for now).