During the annual homecoming period, my sister-in-law Miu comes to stay with her husband, my older brother. Every time, he completely ignores her, obsessing over fishing from morning till night. As a result, Miu is left all alone, and naturally, we grow closer. Years ago, we crossed a line, and ever since, this yearly visit has become a special time for us—one where we never fail to indulge in a passionate physical relationship.