Apparently, many members of the Self-Defense Force have military backgrounds, which may be a contributing factor to their over-patriotic tendencies, not to mention why they were not disbanded by the school in the first place. They also act as the school's disciplinary force, enforcing the school's laws by violent means; Rivalz also commented that they ruined the mood of the academy and were more like vigilantes than legitimate enforcement. They do, however, seem to legitimately care about the school, even organizing a nightwatch to protect the campus.