I'm a Hero, So Why Does Everyone Call Me the Great Demon King?

Multiple alien worlds invade Earth, bringing the planet an unprecedented crisis.

Zhang Yuan is an unremarkable ordinary Earthling, but he obtains the Hero System, becomes a god-tier hero, and gains the power to punch Earth apart.

A ten-thousand-meter giant stomps a city to rubble.

A space-time dragon destroys an entire island nation with a single breath.

A sea-bottom Kunpeng is too big to fit in the pot.

Cursed creatures governed by rules, and the immortal monster 096.

God-tier conceptual lifeforms that exist in another dimension.

Devouring, evolving demons; New Humans who've unlocked their genetic locks; parasites that control life; aliens invading Earth; endless swarms of insectoids; AI machines evolving without limit...

Humanity cries out in despair, begging for help.

"Anyone, please! Save us!"

"Hero! Please come back!"

"We know we were wrong. Please, save humanity one more time!"

The hero makes his entrance!

One punch smashes the Demon Ancestor, one stomp kills the Dragon Emperor, one kick takes out the ten-thousand-meter giant, and with his fingers spread, he crushes hundreds of millions of New Humans.

"You wretches! You dare lay a finger on my Earth? Do you have a death wish?"

When he punches a planet to pieces:

"Sorry, that was the gentlest I could make it."

What hero?

Call me the Great Demon King!