MDYD-463 - Step-mom corrupted by her step-son while husband is away

Kyoko, feeling lonely in a sexless marriage, falls prey to her step-son Yoshio's manipulative seduction. With her husband away on business, she becomes his personal sex slave, forced to endure his perverted whims. The situation spirals out of control as she is eventually shared with his friends, drowning in a sea of endless pleasure.