An adult prep student moves into his own place to attend school in Tokyo, but his constant noise finally pushes the married woman downstairs over the edge. She storms up to chew him out, only to find an unsophisticated, timid young man trembling in front of her, awakening her sadistic side. Her lecture turns into complaints about her husband, then an admission that she is sexually frustrated. She seduces him, works his nipples and cock at the same time, and force-rides him in a fierce spider cowgirl position until he cums inside her.