The protagonist that graduates safely from the sex education, After it graduates, To the putting away memory loss in the traffic accident. Though the protagonist that became the expert of the ecchi, To the calamity that happens suddenly, Sex education and opposite sex, Study, The thing concerning the thing of surroundings is all. "Reset" It has been done. The protagonist is shocked in the thing that has completely forgotten me though tadako that came to the house of the protagonist as tutorial is pleased with the restart with the protagonist. To regain the memory of the protagonist somehow, To the thing to do the sex education to the protagonist again. However, Eiko of childhood friend who lives in house of next to not to think relating of protagonist and tadako to be pleasant (New character). Really, The end of sex education of protagonist?