Rin, a mother of two NEETs in a child's room, is a sex worker.

When did the gears go wrong... Ten years ago, when I married my husband, both my older brother Tatsuya and my younger brother Kazuya were cheerful and sociable children. However, after failing the exam, my older brother began to stay at home, and my younger brother Kazuya gradually became a dark and distorted personality. Then one day, Kazuya asked me to take care of her sexually and dark eyes... I comforted him, not knowing what would happen if things continued like this, but my older brother Tatsuya saw me...