"From today on, you two are step-siblings," those words changed everything between them. As the younger stepsister entered puberty, the long hours spent together with her older stepbrother made her fall deeply in love with him. Overwhelmed by her growing desire, she finally confesses her feelings. To her surprise, he boldly replies, "You're adorable and exactly my type—what are the odds you'd end up being my stepsister? We're not related by blood. There's nothing wrong with us being intimate, right?" How she responds to his confession and how their forbidden romance unfolds becomes the heart of this thrilling, emotionally charged story.