ADN-522 Is the play in her womb her husband's play or her father-in-law's? Saya Endo, the father-in-law who kept playing his son's wife

Five years ago, my wife died in a traffic accident. Since then, I've been living like an empty shell. The only thing that made her feel safe was her son. My son told me he was getting married and introduced me to his girlfriend. It was my wife. My wife was there. When I saw Saya-san, I couldn't suppress the sexual desire that rose up for the first time in five years.