Since my father passed away, I want to make things easier for my mother who has been raising me alone, so I study hard every day. One day, my classmates Sawai and Yoshino came to my house. When Sawai left my room and didn't come back, I went to check on him and found my mother giving him a hard blowjob! It seems that Sawai had been cuckolding my mother for a while. "Watch right there," Yoshino said, and joined in. The two of them raped my mother with a creampie, and she moaned in front of me, saying, "More...Cum inside me...". Witnessing this, I got a hard on...