Kara no Naka no Kotori

Foster, formerly a trainer of high-class prostitutes for a secret political group that used these girls to exert power over politicians, has has long been out of the game, as he and his cohorts were busted years back. However, Foster couldn't help himself and soon returned to his old profession. He began training new maidens, though this time with a distinctly evil bent, drawing the recruits into a sordid ring of discipline and bondage.

[Taken from ANN]