栗原早苗、自分の息子と同年代の童貞との筆おろし物語。49歳の彼女に筆おろしを願い出たのは二十歳の学生。最初は近場の商店街をデート。息子と重なりウキウキな早苗さん。そのまま童貞くんの家へ、ふとした瞬間に息子から男として意識しだす早苗さん。そのまま膣内に導き筆おろし。嬉し恥かし童貞卒業ドキュメント

Sanae Kurihara’s first story with a virgin who is the same age as her own son. It was a 20-year-old student who asked her 49-year-old girlfriend to write a new brush. First, we went on a date at a nearby shopping street. Sanae is excited about her son. Sanae goes straight to the virgin boy’s house, and suddenly begins to realize that he is a man from her son. Just guide it into the vagina and remove the brush. Happy and embarrassing virginity graduation document