Jikuu Mahou de Isekai to Chikyuu wo Ittarikitari - Chapter 343 - Investigation

In 2040, The Earth was bathed in powerful radiation when a star went supernova, this radiation granted 50% of humans superhuman abilities but also created a nightmare for them as animals, insects, and carnivorous plants were mutated and became overpowered with intelligence, human started teetering on the brink of survival, a boy with no powers and no father, with a mother in a coma, seems destined for obscurity, but one night changed his life, with a new found hope to cure his mum from the everlasting sleep—Gene Elixir— he went on on a journey that would reshape his destiny...~Voracious Sovereign... Gene Devourer...Pray you won't be devoured by this power you wield which hunger is insatiable~~You call yourself an opportunist... But... you aren't free. A hungry man is not a free man...~

A random invitation completely changed one man's life. Never to live the same ordinary days ever again.

Dungeons appeared, followed by the discovery of monsters and mystical races; the common sense of the modern world turned on its head the moment superhumans began to awaken and fight back these monsters.

Because they found something spectacular when killing the monsters...

The monsters dropped special items, from weapons and armour to resources and gold.

They were heralds of a new era!

These new resources could fuel the world's power, making fossil fuels and nuclear power obsolete.

Overnight, the world as people knew it changed.

Reality warped, welcoming the end of normal life and causing the world to spiral deeper into a mysterious chain of events.

The boy shouldering immense debt, inferior feelings due to his looks and dropping out of university.

Maybe fate gifted him this chance while looking at the strange app.

He has the chance to turn his life around forever, so he chooses.

To enter the Eternal Dungeon.

……………………………………………………………

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Emperor Xianwu ninth reincarnation, only to break through the shackles, was besieged and killed by masters from all walks of life.

Fortunately, a ray of divine consciousness traveled across thousands of planes to the earth and entered the body of the dead young man, just to get rid of the anger in his heart and to regain that peerless peak!

- Description from MTL

[You have entered the dungeon at Gwachun Station’s 1st Exit.] When former high school student Kang Woojin finds himself returned back to Earth after being forcibly summoned to a foreign planet for 20 years, he soon finds that Earth is not the same, normal place as he once remembered it to be.