FERA-133 The son who can't ejaculate due to vaginal pressure is thoroughly trained by his mother's thick and tight pussy. Deep mountain Yuri's hyper-long sex

"Isn't your sex life with her going well?" Yuri, who knows everything about her son, easily saw through the reason for his lack of energy. "You've gotten too used to the stimulation of sex dolls and can't feel anything with a girl's body." Yuri worried that her child might become unhappy due to his insensitive penis. To ensure her son's future, Yuri decided to teach him the pleasures of a woman's body using her own flesh. However, Yuri possesses a legendary vagina that is even more stimulating than sex dolls...