Nun uses a student as a sex slave

I study in a catholic school, but the nuns who take care of our education seem to have a different lifestyle. something very different from what is usual in this type of religion. every time i do something that they consider wrong, i face a punishment that is very beneficial to them. they always want to enjoy my cock. i guess they have fetishes for forbidden things and for teenagers. i say this because the punishments always refer to sex with nuns or other students. sometimes they ask me to have a threesome with them. of course, i can't say anything to my parents because that way i could no longer enjoy this xxx punishment. so, i always try to be a bad student and enjoy the nuns' punishments as their sex slave.