優等生の姉は早熟で、早くからオナニーを覚えていた。姉がはじめて弟にアナルを舐めさせてきたのは姉が●校生、弟が●学生だったころの夏…結局、成人した後もこの習慣は続き、彼氏ができても弟の肛門クンニがないとイケなくなってしまった姉は、SEXまで求めるように禁断の領域へ…最高にカラダの相性のイイ姉弟。
My older sister, an honor student, was precocious and learned to masturbate early. The first time my sister made her brother lick her anus was in the summer when she was a school student and her brother was a student…Even after they became adults, this habit continued, and even after she had a boyfriend, she still couldn’t give him anal cunnilingus. The older sister, who is no longer able to cum, goes to the forbidden area, even asking for sex… A sister and brother who have the best physical compatibility.

– JavGG.net