Rina, who lost her husband in an accident a year ago, lives with her father-in-law. From a certain time, something happens to my father-in-law. Dirty clothes, calling only while taking a bath or excreting, sweetening like a child ... It seems that blurring has begun. And Rina is attacked by her father-in-law. At first I resisted, but I couldn't leave it alone and gradually changed to Rina while taking care of it. Her female part begins to wake up and she begins to ask her father-in-law for the male part.