Yuu was troubled by the serious look in her son's eyes. The virgin son, anxious about getting along with his girlfriend, begged his mother, Yuu, to teach him the ropes of sex. Yuu, overcome with enthusiasm, decides to explain sex to him. But then she saw her own child's cock, which was so fierce, magnificent, and immensely powerful. The overwhelming power of his cock shakes Yuu's rationale, who has always been a cock lover and a dirty girl....
