What a shame that the game died before we ever got one femdom scene with katherine.
But well at least we got a somewhat ending with the childhood friend if we chose to stay with her and let every one else.
As for the story, i think at this point it's easy to read between the lines and understand it : his father after all the shit his mom pulled with the debt...etc ordered to kill her, the aunt that was in the business with him didn't accept it, and after his refusal to withdraw his order she killed him to protect the women she loved. that's basically it.