My phantom mother's body is so soft that I end up massaging it too much.

The Sawatari family has ceased to be a married couple for several years. Saori, out of loneliness and frustration, sees her son who has grown into a fine man and indulges in obscene delusions, comparing him to her husband when he was younger. On the other hand, her son, who was around the same age, was also starting to think of Saori as a woman. There's no way it would take long for these two to have a forbidden relationship...