Erika, my mother's best friend, suddenly came to my house. It seems that she had a fight with her husband and ran out of the house. That afternoon, I hear Erika masturbating in the bathroom. I got aroused by Erika-san's disgusting voice, and even though I knew she was my mother's best friend, I came to think of her as a woman. And I couldn't stand the moyamoya, so I asked Erika...