Des:After getting divorced, she took in the younger of her sons and raised him. Her ex-husband passes away, and the three of them are reunited. The three of us were planning to go on a trip this time, but my younger brother was unavailable, so I ended up traveling with my older brother. In fact, after not seeing her mother for many years, her brother had started to think of her mother as a woman... Shes always loved her mother... she cant take it anymore. Chisato refuses once, but due to her brothers strong enthusiasm, she forgives him just once. Theres no way itll end with just one experience of intense pleasure...A new relationship between parent and child, indulging in forbidden pleasure, is about to begin.