MTL - Immortal Soul of Steel - Chapter 268 Genesis

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

Warning for lighthearted souls— Expect NTR!! Spicy scenes, lot of Bloodshed and Epic fights.A soul from Earth meets an untimely death due to a mistake from a God. To make up for it, the god grants him a second chance—sending him to a world of fantasy and magic, armed with overwhelming skills and divine abilities. Blessed with the might of a Divine Knight, unparalleled skills, and the strength to power creep all his enemies, his new life is set to be the grand adventure he always dreamed of.However, mixed within his long list of skills and stats is a peculiar trait he never asked for—[Endless Ardor], a Divine Trait that grants him limitless charm and virility. Will his adventure in another world go as he wished for?Follow Reinhardt as he journeys through a world overrun by Demons while spending nights with peerless beauties along the way.

“Hmph, my dumb big sister is in danger!” A mischievous grin spread across his face. “Hehehehe... this gives me the perfect excuse to finally use this treasure I’ve acquired but never bothered with!” He rummaged through his belongings, carefully selecting various items. “A bit of this... and this... and a dash of this.” Boom! The explosion of energy sent a ripple through the air as he laughed maniacally. “Hahaha! It’s done! Now, all I need is a compatible host for it.” Years later... “Did I overdo it?” he wondered in awe, watching as his creation wreaked havoc, conquering world after world with ease, as though stealing candies from children.

Waking up as the most hated noble family in a fantasy world is bad. Inheriting a 50,000 gold debt with a death sentence attached is worse.​But the Sanusi family isn't scared. They are from Earth, and they brought the Industrial Revolution with them.​Now, the magical realm faces a new kind of warfare.Knights vs. Tanks.Mages vs. Railguns.“You have a Dragon? That’s cute. We have Anti-Air Cannons.”​It’s time to pay debts and conquer kingdoms.