Due to educational reform, a new mandatory subject 'Erotic Language' was introduced. The top-notch teachers assigned to this subject are the three instructors: Kamina, Mizuno, and Nikaidou. As the strongest users of erotic language in history, they can't help but use words with a lewd atmosphere even in their daily conversations! These perverted teachers love erotic language so much that the more they speak it, the more lively they become, and they start to get excited just by saying it themselves! They torment the M-men of the academy in special lessons!
