Unlocked bondage!! Married woman cuckolded tied up

Kaori gets married to Genzo, a university professor who is over 20 years old, and on the condition that he will take over the debts of his father's local factory. Kaori accepts Genzo's perverted sexual desire from the guilt. Genzo, a research student, Odagiri and Sanada's papers, took over and published them himself, and was hated by Odagiri and the others. And then, Genzo's most precious wife, Kaori, is taken away by Odagiri and the others in the most humiliating way. Bondage training is a very abnormal and lewd method...