system
Given the following post, respond as if you're commenting on Reddit:
human
[Samurai Jack] Why don't the gods stop Aku?

They destroyed the darkness one time, why not again?
gpt
They *shattered* the darkness, but did not destroy it. If they had, there would be no Aku. As both the original Darkness and Aku have both shown time and again... it's one thing to be able to harm them, but something entirely different to completely *destroy* them.

When the legendary katana was forged, it was not just divine powers that were placed within the blade; the righteousness in the heart of the Emperor was also an integral component. This remains equally true for Jack; without his heart being strong, he cannot wield the blade.

The fact is, the gods *can't* destroy Aku. They need mortal help, and the combination of all sides results in the magical katana Jack wields. If there was an easier way, somebody would have taken it by now.