Looking for a doujinshi where the main charachter and his girl friend tries to win a school election vs the school principal and his female underling. They start pretty tame, but they both find out they have to do sexuall favours to win the election. it ends with the male protag disapointed in his friend, because both her and her "opponent" ends up as the principals sluts. I think she looked slightly goth while her opponent looked kinda preppy.
