A peaceful newlywed life at my wife's parents' house. But these happy days were shattered in an instant when my sister-in-law came home to visit. Under the same roof as my beloved wife and mother-in-law, my sister-in-law's fierce temptations knew no bounds! Not only did she attack me directly, but she also had sex with the other man! In the bathroom and in the bedroom with my wife sleeping next to me, I felt my reason crumble with a sound... And after crossing the line, I was so pathetically captivated by my sister-in-law, both in body and Kokoro.