Her husband died early, living alone with her son at the age of 20 was the reason why the young mother Fujnami had desires and desires for her own child. Being in adolescence, the son is also very curious about sex, lewd as much as his mother, it is for these reasons that the two have incest with each other even though they know that this is taboo, contrary to morality, but they know what to do when their lust has reached its peak.