Auction wives (Reprinted Special Price Edition)

Inako, the president's daughter-in-law, never allowed her husband Sachio to live a life that she could not understand. Just as Kanako looked through, fitness club instructor Reika provoked herself and showed off her lover Murakami's sex. Even so, she refuses to live a life without hesitation, but her father's company went bankrupt and divorced Yukio, which completely changed her life. While working in the office of Murakami, he lived a quiet life, but was kidnapped by men who came to pick up his father along with Murakami and Reika. There, he was humiliated and Kanako was taught by a sex nerd. However, this abduction was planned by Murakami. what is murakami's plot?