When did things start to go wrong? Ten years ago, when I married my husband, both my older brother Tatsuya and my younger brother Kazuya were cheerful and sociable. However, after failing his entrance exams, my older brother started to withdraw into his home, and my younger brother Kazuya's personality gradually became darker and more twisted. Then one day, Kazuya asked me for sexual relief, his Hitomi dark and cloudy... I tried to comfort him, not knowing what would happen if he continued like this, but Tatsuya saw me doing so.