It's a summer secret that he can't reveal to his wife... His uncle is 60 years old and lives in the countryside, and only his wife knows about it... His niece Azusa is 19 years old and has become completely grown-up living in the city. A forbidden act of incest between him and his niece, who loves her very much. I love you, Uncle Azusa... Her nape... her plump breasts... her shapely butt... her voice... her smell... he can't help but react to his niece's grown-up body. Uncle... you're getting really hard... You haven't done it with aunty, have you? I'll keep it a secret from aunty...