Two years after marrying Masaji, who had been divorced once before, Reiko gave birth to a son named Taku three years into their marriage. Though Masaji tried to treat both children equally, Taku always clung closely to Reiko, and this appeared increasingly unequal to Masaji. One day, Masaji witnessed a forbidden relationship between Reiko and Taku, trembling with shock and jealousy. Those emotions grew stronger, driving the family toward a dangerously unstable state.