My niece Maika-chan came to stay at Yamada's house, who only thinks about her butt. Maika doesn't listen to people, she just plays games all day long. She is Maika-chan who exposes her beautiful butt defenselessly. Yamada can't stand it and buries her face in her girlfriend Maika's butt... At first I was surprised by her sudden act, but she became happy halfway through and asked for more and more as if playing with her uncle. From that day on, the secret relationship between the two began.
