I was not expecting this from an anime. The show is called Nana to Kaoru. The above picture is of Nana Chigusa, top flight high school student. Her secret way of relaxing is soft S&M with her frankly scary weird boy friend[not sure if real boyfriend or just master - I quit less than halfway through], so she ends up acing tests afterwards. Did I mention both main characters are in high school yet? Well they are. I so need a neuralizer and brain bleach now.