I and my childhood friend have been together since I was little and have been aware of each other, but I couldn’t take a step further. I wondered if that relationship would last forever, but one day my parents remarried and decided to live with my sister-in-law who came from the city. I am confused when I am suddenly approached by my sister-in-law who is a spear man and has a freewheeling personality. My childhood friend is jealous of my relationship with my sister-in-law, and my childhood friend is tempted to pull away. In addition, my sister-in-law also seduces and scrambles to 3P! ??