Mariko Koto, 43 years old, Chapter 4: Although she didn't want to get pregnant, unprotected sex was the most enjoyable. A mature woman pleading for penetration, not to create a baby, but for pleasure. SDNM-423

"I want sex that feels better," Mariko said before filming, when the director suggested they have sex with penetration inside her. Mariko couldn't make a decision on the spot and had been worried about it all day, but when she saw an unprotected penis in front of her, her desire intensified, and she accepted the raw penetration. Since her last pregnancy, she had an unprecedented reaction to primal sex, moaning and writhing.