Underground Shelter Complete

Three years later, the Underground shelter is finally completed.

With the collective effort of millions of people, most of the infrastructure needed for the underground shelter is in place. 

As for the heat, it has become so unbearable that protective clothing is necessary when going outside.

The rising temperatures have even caused the sea to slowly recede as it evaporates.

...

Inside the Promised Land Shelter, the entire shadow group has gathered.

"We have finally achieved our goal," they sighed in relief.

To reach this point, they faced countless hardships.

From resource struggles, examinees' disputes, the relentless heat, all of this took a toll on their mortal bodies. 

"Right, we can finally rest," Max sighed, his skin already darkened from years of mining, making him appear the oldest among their group. 

"Not quite, we've only completed the structure of the shelter; the interior is still empty," Liam pointed out.