Satoru, a friend of her son, suddenly shows up at the house and reveals that Takashi is being bullied at school. Claiming he's starved for affection, Satoru asks Eri to let him rest his head on her lap. Reluctantly, she agrees. But his demands quickly escalate—soon, a vibrator is shoved inside her, and Eri moans helplessly like a slut. Even as she whispers, "This is the last thing I should be doing," she willingly takes his cock deep into her throat. Faced with his thick, rock-hard young dick, she murmurs, "I really can't do this~," yet greedily accepts it with her soaking wet pussy. Riding him in cowgirl position, she grinds fiercely, the penetration clearly visible, losing herself in an orgasm more intense than anything she's ever felt—so much that she forgets he's her son's classmate. Ignoring her desperate pleas of "Don't cum inside!", Satoru cums deep within her. And from that moment on, an even more shocking confession comes to light.