As part of measures to combat the declining birthrate, 'practical sex education' was initiated, involving teachers using their own bodies for 'direct' instruction. A married female teacher with a husband and two children struggles with shame and guilt towards her family but decides to proceed with the teaching for the sake of her students. Incidents occur such as male teachers directly instructing female students and male students losing control over their sexual desires towards female teachers who have returned to work after giving birth...!?
