One day, several years after marrying a divorced man with a child, Nozomi tries out a dating site on a whim and becomes addicted. Little does she know that the person she is dating is her stepson... However, even after learning this fact, Nozomi cannot suppress the throbbing in her lower body and ends up having sex with her son. Moreover, she enjoys the thrill of possibly being found out by her husband, and is unable to escape from it. This innate promiscuity is what causes the Hazuki family to...