Reuniting with his niece Mai after a long time. When Mai was still young, her uncle had performed various sexual acts on her under the pretense of 'play,' developing her body. The grown-up niece's body makes her uncle lust again, and Mai is weak-willed... 'Let's play with Uncle.' Mai recalls the obscene pleasure of their 'play.' 'Uncle, no more of this...!' The taboo sex repeats!
