Satone has been married to an older man for six months. One day, Satone thought that her two teenage step-sons had grown close to her, but a condom was discovered in the couple's bedroom. Her impressionable sons mischievously demand sex from Satone, asking, "How do you use birth control? Tell me, stepmom." Satone is confused as she is made to do as they ask, becoming their sexual outlet... The shocking pleasure of her step-sons penetrates Kokoro! Her beloved wife is seduced, She is skewered and falls as the depths of her throat and vagina are blocked by the meat stick. "We'll satisfy your mother-in-law in place of our father..."