My mother has been remarried to Yohei-san for 3 months. I'm still not used to suddenly having a new dad. I accidentally saw my mother having sex with him, and I saw that she felt extremely happy. I want to be like my mom too! So I asked him to do the same thing he did to my mother, he seemed to be looking forward to it. So we started this incestuous relationship. And the needle in the wrapper finally came out, my mother became suspicious and caught us...