I divorced my husband soon after my son Satoshi was born. After that, I started living with just Satoshi. Of course, I acted cheerful in front of Satoshi, but deep down, I was filled with loneliness. Then, one day, when I was carrying Satoshi's bath towel to the bathroom, I saw Satoshi's genitals, which had grown into a fully grown man. Even after returning to my room, I couldn't forget the scene and immersed myself in masturbation. I had no idea that Satoshi was watching me...