My friend's mother

After missing the last train, Yoshiyuki ends up staying at her friend's house, and is captivated by the beauty of her friend's mother, Kumi. Late at night, Kumi's moans were heard from her quiet room, and Yoshiyuki went to peek after being curious, and then witnessed Kumi masturbating and took a photo. Later, Yoshiyuki visits Kumi's house and shows her photos and asks Kumi to get into her physical relationship.