To clarify the above, it is essentially a tracker that shows your interest in certain parties. You have the three main central characters and then the others whom hold some allegiance to central characters. As you focus on one sector the index increases (with changing colour and facial expression), however decreases in the other sectors. Essentially at any given time you may be in the good books with one sector and out of favour with others. This is not static, and will change with every interaction you elect to undertake with crew members.
The index will control what lewd content is available at any time and will also be used to tailor the crews interactions with the player. Additionally I will use it to trigger certain events between crew members, such as Tiffany perhaps wanting to play a prank on Lia given the relative relationship score above. Whilst it will be possible to experience all of the lewd content in the final game on a single play through, it will require you to switch your love interest several times during the game. Also if you want to play like a monk from 0.50 onward that will be possible also.
