A prank that makes it impossible to predict what will happen next. Nao, a sex-loving G-cup female teacher who is an advocate of relaxed sex education, and Risa, an I-cup female teacher who is an advocate of Spartan sex education, wear provocative bodycon outfits to cover their incredible, anti-monopoly bodies, and hold the mind and body of a masochistic male student between them, blindfolding him to deprive him of his sight, and toying with his sensitive dick, which has been sharpened to the limit, in the name of instruction. A completely improvised double perverted extracurricular lesson by the perverted teachers. 5 chapters in total.