The son takes the place of his father and fucks his stepmother every day

My father's remarried partner is a beautiful and famous woman in the city. Furthermore, is the owner of a beautiful and plump bust. My father, who was busy with work and smoking, was indifferent towards Mayu-san. What a waste to have one that looks so beautiful and comfortable to hold in your hand. One day, I happened to see Mayu-san masturbating.