大きなお尻の女子社員を選抜!尻コキ用オナホール開発調査だけのはずが…ま○ことオナホの感度比較チェックで生ち○ぽ挿入!デカ尻4名の柔らかさ・揺れ具合・感度を徹底調査!
We selected female employees with big butts! It was supposed to be just a research project to develop a masturbator for butt-jobs, but... we inserted a raw dick to compare the sensitivity of the pussy and the masturbator! We thoroughly investigated the softness, swaying, and sensitivity of four big-butted women!