MTL - Armageddon: Shelters Can Be Upgraded Infinitely - Chapter 24 ?The truth about the ruins of White Bear City

Peace is a lie told by kings sitting on a pile of corpse..........In a dying world ravaged by dungeons, beasts, and alien gods, only one truth remains:Power decides everything.Some Heroes are kind.Some are just.Most... are monsters wearing crowns of light.Ezekiel Zahara was supposed to die forgotten, a bastard stain in a noble bloodline.They tried to kill him.They failed.He awakened a mysterious system that enabled him to fuse lifeforms with machines into something neither man nor gods could comprehend.With circuits running through his Spirit Veins and mechanical beasts by his side, Ezekiel will carve his legend into the bones of the world.

Year 2056, in a city in the Yuan Jiang Su Jin area. On top of a ruined, shattered six story residential apartment sits a teenager wearing a combat vest, militaristic trousers, and alloyed battle boots. On his back is a hexagonal shield and equipped is a blood-shadow battle knife. He sits there silently on the edge of the roof. At this time, the sparkling sky was shining and there was a refreshing breath within the air that blew towards him. However, there was only silence within the ruined, deserted city, with an occasional howl that makes your heart skip a beat.

- Description from novelupdates

When a person dies, they either die light as a feather (aka unimportant) or heavy as Mt. Tai (aka very important).