Yamahime no Sane Vol. 3 山姫の実 第三巻 きずな

"Mother and I live together in a small apartment, we have a small but happy family. One day I noticed that my best friend only came to visit when I was not home..why...my mother casualness towards him is also suspicious. One day returning to home I noticed my friend was just outside my house and left nervously as soon and he saw me. I investigated and found my mother's panties full of semen! Could it be he is secretly masturbating with my mother's panties... I grew suspicious and decided to hide home to see what was going on while I was out and soon I discovered everything.... Yes, my mother is having wild sex with my best friend while I am not home..."