Reiko felt a mix of joy and a tinge of sadness at the reunion with her former students after 15 years, seeing their growth. On her way home from the alumni gathering, she met Kashiwagi, another former student who had also attended. As they reminisced, Reiko was deeply moved by Kashiwagi's sincere confession, leading her, under the influence of alcohol, to give in to him. Reiko, overwhelmed by a pleasure she had never felt with her husband, found her body deeply imprinted with the sensation...