Household chores at home are extremely boring, so Yuria Satomi suggested to her husband to take extra English classes during her free time, which has been her passion since childhood. However, after getting married, she became busy with family duties and has not been able to fulfill that dream until now. After her husband agreed, Yuria quickly signed up for a class at a center, and her teacher is a tall, strong black man. Unfortunately, she had always heard that black guys were great and fun to be with, but she hadn’t experienced it herself. Curious about that, she gradually forgot about studying and moved on to secretive days with her black teacher.