Three years ago, Fubino started teaching English conversation classes for adults at her home due to feeling lonely after her husband moved out to take care of his father. Although she found solace in her work, she still couldn't satisfy her physical needs. One day during a lesson about drinking etiquette, one of her students took advantage of her drunken state by molesting her while she slept. Surprisingly, Fubino accepted it and began seeking that forbidden pleasure after each class...