My childhood friend cheated on me with my younger sister and declared our engagement broken, and my brother-in-law comforted me. However, the brother-in-law I had come to love turned out to be a traitor...

My lovers and people I fell in love with were always taken away by my younger sister. And even Luke, whom I had made a childhood promise to marry, was taken from me. He told me he wanted to break off our engagement because he had fallen in love with my sister. It was my brother-in-law, Al Onii-sama, who comforted me as I cried in despair. A year later, when the wounds in my heart had healed, he confessed his love to me and we became engaged. But Al was actually...