Outrageous! I am a Dignified Demon King, and I Have No Power to Bind Chickens

My name is Guanglin.

The strongest demon king from another world, as prophesied.

I will roam the world with the power to overturn everything, overthrow the current Demon King's rule, bring all of humanity's kingdoms under my control, and end all conflict...

At least, that's what my family says.

...

Looking at his all-powerful companions who had signed a contract with him, now able to fly and escape anywhere, Hirobayashi, who was weak and breathless after just a few steps, fell into deep thought.

So...

Where exactly does your power come from?!