The Warden of The Witches - Chapter 237:

Eren Idril died as an old, decrepit, and piss-poor adventurer by the maws of a D-Rank monster. He had a lot of unfulfilled dreams and desires that couldn't see the light of the day after the light in his own eyes died down.

But fortunately for him and unfortunately for the world, that wasn't his end. Eren was somehow dived back in time when he was a mere teen, attending Lionheart Academy for adventurers.

When life gives him a second chance, Eren decides to exploit it to its fullest. Experience his vile deeds as he partakes in them without feeling the slightest bit of hesitation.

The mountain village boy accidentally got the fairy gourd, and he rose step by step to cultivate immortality and longevity.

Ripe elixir, mortal flow.

- Description from novelbuddy

After the ‘100-Year War’ between the Necromancers and Priests, an all-time genius who’ll shake the power structure was born. “Am I a rare case or something? Do I have talent?” A potential beyond all imagination. He obtained his father’s undead army and entered the great Necromancer school of Kizen that divided the continent. Geniuses are geniuses, even when gathered among the elites. The research community was flipped on its head by the appearance of a new case. Professors wouldn’t leave him be alone, wanting to make him study directly under them. Officials from all over the kingdom and heads of organizations fidgeted over whether to scout him. “Professor! When can I make a Lich?” “Gimme a break. How talented are you? You’re crossing the line, honestly.” A genius among geniuses had appeared.

In the distant Eldrathis Galaxy, a vast and uncharted frontier teeming with ancient ruins and deadly secrets, humanity is a small fish in an ocean of monsters. But that doesn’t stop treasure hunters like Clara Dravenmoor, a brilliant and reckless archaeologist, and the Safira's crew, from chasing lost relics buried in the void.Her latest mission? Recovering a priceless artifact from the ruins of Zhaaros, a hostile planet plagued by nomadic warlords and nightmarish creatures. But what she finds isn’t just a relic.It’s him.A pale, otherworldly man, locked away for centuries in a high-tech sarcophagus, covered in mystical markings and dripping with an aura of power that defies reality.He looks confused. No memories. No idea why he was trapped there.But he doesn't look angry.He looks eager.Excited to follow Clara in the Safira through the vast and magnificent galaxy.