A mother who ran away from home after fighting with her husband came to her son's apartment, where he lives alone. She drinks sake with her son, using her husband as a topic of conversation. Perhaps as a way to vent her frustration on her husband, she can't suppress her sexual desire and rides her son, and the son is surprised by the lewd lust of the fifty-something mature woman!! Even though he knows it's wrong, he ends up creampieing and ejaculating inside his mother!!