The villa area, separated from the campus and the lake garden, was divided into two distinct sections east and west, home to two clubs respectively— the 'Student Council' and the 'Greenfield Club'.
The 'Student Council' was near the collective apartments, usually comprising the princesses from the direct Tokugawa line or the daughters of the headmaster's family, who served as the student council presidents, responsible for coordinating the social groups of both 'gilded' and 'pure gold' status.
Meanwhile, the 'Greenfield Club' was a society that only 'pure gold' young ladies could join.
The headquarters of the 'Greenfield Club', Greenfield Manor, was originally prepared as a villa exclusively for the Oda Family princesses. Later, it was also made available to the daughters and granddaughters of the big players who stood as equals with the Tokugawa Clan among the board members, serving as presidents of the Greenfield Club so as not to be outdone by the student council presidents.