I think the " Older woman " chapter might be foreshadowing that Jarul knows Imu exists and betrayed Harald for the World government just to see that " Older woman " ?
But Harald somehow realized that and decided to ruin this plan by making the kids unable to fight so they would be useless in war. Another sad king that had to sacrifice himself for his ideals.

But Harald somehow realized that and decided to ruin this plan by making the kids unable to fight so they would be useless in war. Another sad king that had to sacrifice himself for his ideals.