It's been half a year since her mother-in-law passed away, and Rinko has gotten used to living with her husband. - One day, my brother-in-law Bunta suddenly came home... - Rinko is fed up with Bunta, a playboy who keeps inviting her out, but is swayed by his persistent approach and ends up having a relationship with him. - Unlike her selfish husband who has special sexual tendencies, she repeatedly climaxes when caresses stimulate a woman's pressure points. - Rinko, who lost herself in the pleasure for the first time in her life, continued to be tempted by her brother-in-law's persistent advances...