A beautiful bride came to the old house of Genzo. No one knew her past. Life with Husou Genzo was happiness itself. Her husband's younger brother, who had returned home, was once her lover. She began an affair with her brother-in-law, however, they were discovered by the villagers.
After resisting initially, the wife kisses her brother-in-law (who is also her ex-boyfriend) in the forest (28:15). The guy's current woman purposefully interrupts them.
The brother-in-law is arrested and beaten up in jail. He escapes and the wife hides her in the barn, where she fucks him (44:00).