In a world where 'practical sex education' has begun as a measure against low birth rates. This is a new form of sex education where men and women learn about sex by actually having intercourse to conceive. In this story, the homeroom teacher Hibiki Otsuki calls in students who refuse to attend school and uses her own body to directly teach them about sex through internal ejaculation... She carefully teaches them which parts of a woman's body are sensitive and how to please them, allowing them to actually touch, insert, and ejaculate inside, thereby experiencing conception. Then, they report the pregnancy, and the education ends.
