父の再婚相手の義母のこずえ。父は何も知らずに、義母を抱いている。だが、義母と俺には秘密がある。それは、こずえが俺のいいなりペットだと言うこと…。再婚してすぐ、俺はこずえと関係を持った。その時から、俺に逆らえなくなった…。もし、この関係が父にばれたら家族は崩壊するだろう…。その刺激が、また新たな興奮をもたらすのだった…。Kozue、 my father's mother-in-law from his second marriage. My father holds my mother-in-law in his arms without knowing anything about her. But my mother-in-law and I have a secret. That is、 Kozue is my favorite pet... Soon after I remarried、 I had an affair with Kozue. From that moment on、 she couldn't resist me. If my father found out about this relationship、 my family would be destroyed. This stimulation brought a new excitement to it....