Yamada, a freelancer who only thinks about butts, had his niece Ichika staying over. Ichika wouldn't listen to anyone and played games all day long. She shamelessly exposed her beautiful butt... Yamada couldn't hold back and buried his face in Ichika's butt... At first, she was surprised by the sudden act, but soon started enjoying it and began demanding more from her uncle... Their secret relationship began that day.
