Shortly after marrying, Minori's life takes a drastic turn when her husband suddenly falls ill. Though he survives, he is left with erectile dysfunction. The couple struggles to restore their former intimacy, but with no improvement in sight, exhaustion sets in. As her husband's younger brother begins to offer gentle support, Minori slowly finds herself drawn to his warmth. Their bond gradually deepens, forcing the two to face an impossible choice. The consequences of their decision will shatter her husband's world.