MOC is a program introduced by the government to keep a record of everyone's fitness and stuff but it was throughly modified and changed by the perverse medical staffs into a mandatory full-body checkup and since then everyone is following the program in the same way. Full-body checkup might sound good but majority of it consist of sexual stuff, There are hospitals to do MOD once a month and Police who would do MOD anytime they want. You will get no score or ego boost of you do good in exam but bitches waiting to be knocked up anyway you can start the story from whenever you want, you will either get caught by the police or by the hospital sooner or later, all charcaters are female