Outrageous! I Am a Mighty Demon King, but I Have No Power to Restrain a Chicken.

My name is Guang Lin. The strongest demon king from another world in the prophecy. I will walk around the world with the power to subvert the world, overthrow the rule of the current demon king, take many human kingdoms into my hands, and end all disputes... At least, that's what my relatives say. … After signing a contract with him, Guang Lin, who was still out of breath after taking two steps, fell into deep thought. So... Where does your strength come from? ! !