Everyone Evacuated. Only I Am Left on Earth to Wander the Stars!

The sun was expanding quickly and approaching its end. All humankind boarded the spaceship and were migrating to Mars.
When they took a last look at Earth, they realized that they had missed out one person.
So, all humankind were speculating how the last man would survive on Earth.
The USA would never leave any citizen behind. An unprecedented rescue mission began.
Shaun, who was reincarnated into this world, discovered that he was the only man left on Earth since everyone else migrated to Mars.
Right at this moment, the survival system was activated.
Three months later, a solar storm hit Earth and destroyed it. The spaceship was also destroyed after being hit by a small planet.
Shaun claimed, “Since you guys didn’t abandon me, I will rescue you too.”
He manufactured 10,000 planet propellers, established an A.I. factory, and built a gigantic shelter. He would roam the universe along with Earth.
From today onwards, Shaun will be the Lord of Earth!