A love-hungry married woman teacher continued to impurely intersect with her student over and over again, saying, "Only this time." Sumire Kurokawa

Sumire Kurokawa is a married woman and a teacher who finds herself in a compromising situation with her student, Yamamoto. She engages in a taboo relationship with him, despite being married, and they explore various intimate acts together, including oral sex and intercourse. As their affair continues, they delve deeper into their desires, with Sumire finding comfort and pleasure in Yamamoto's company, and he, in turn, is drawn to her experience and guidance.