Cayono has lived her life looking forward to the growth of her only son, Kazumi. She diligently taught him his studies and he successfully advanced to university. However, she is not at peace seeing him waste his days away in leisure. One day, Cayono starts teaching Kazumi's friend Ikio, enjoying the guidance after a long time, but also stirring up forgotten sensations as a woman. Unable to suppress her rising sexual desires, she takes the rigid, youthful cock into her mouth as a reward for Ikio's improved grades…
