As part of measures to combat the declining birthrate, a new sex education system called "Home Visit-Type Impregnation Sex Education" has been introduced. A specialized teacher visits the student's home and demonstrates how to make a baby while the family watches. Ichika is given sex education on how to make a baby by a male teacher while her father watches! Starting with a physical examination, everything is done in front of her father, and in the end, she has a threesome with a classmate, which results in a successful pregnancy!