MTL - Wear To the High School Days of Iceberg O - Chapter 22

The dead cannot speak.

It means the living can create any story they want.

Inheritance, honor and wealth can be taken away by lies.

However, what happens when a person, who was presumed to be dead, returns alive?

Finding himself in an Last Airbender without an airbender around, a transmigrator waterbender goes on an adventure to stop the worst from happening to him.

Accompanied by all kinds of crisis and despair, was the arrival of mankind’s first significant superhero.

Through a mysterious portal, Chen Jin arrived at this strange place – a post-apocalyptic world where civilization had been destroyed.

Consequently, he found –

A piece of metal scrap
A robot trash collector
A battleground
A city
A ton and more of gold
A copy of high-tech documents
A…
In short, Chen Jin found a planet.

- Description from Novelupdates