A middle-aged man and a young girl are in a marital relationship that could be mistaken for father and daughter. This physical relationship could be considered a crime if they are not careful, and jealousy and envy swirl around the two. However, the two are so strongly connected in Kokoro and body that they do not even notice it in the midst of such a whirlpool. The sensual life of a man who is immersed in the girl's bursting body, who is taught the joys of sex for the first time by the middle-aged man.