Asahi is an office worker with big, round, succulent breasts and always wears skimpy clothes that increase the prominence of her bust, making every man almost wish to touch her once. Even the 84-year-old grandfather she came to take care of pretended to have dementia so he could take advantage of it to massage and even have incest with his granddaughter. Even though he was old, ever since his wife passed away, he was always bored and didn't know what to do, so he started to have the habit of buying a lot of black movies about plowing, which led to a huge pent-up desire in his mind, as long as there was something to do. A small cause will result in a violent outburst, and the niece is that cause. Although he tried to resist and repeatedly told him to stop, in the face of a mind filled with rising lust, the grandfather easily controlled and did everything he wanted on the body of his voluptuous, seductive niece. .