My friend's mother was so sexy that I secretly took a look...

Kyosuke ends up studying for an exam at his classmate Kazuma's house, staying overnight. Kyosuke is completely captivated by Kazuma's mother Kayoko, whom he meets there, with her plump body and her slender sexiness. That night, Kyosuke woke up to an unusual noise and left the room... What I saw there was Kayoko's unfortunate appearance as she straddled her husband and swayed her hips intently. Kyosuke spends a sleepless night with excitement as he watches the whole story. The next day, she meets Kayoko in agony, but last night's lewd behavior can't get out of her mind...