MTL - Mystery Descends: My Exchanges Are Not Equal - Chapter 6 ,upgrade! Soaring strength!

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

I am the sword.

Killing a man amidst a thousand miles, no one dares take ten steps.
Killing a man amidst a thousand miles, no one can take ten steps.
Killing a man amidst a thousand miles, ten steps? Not possible!

I am the sword, the sword is me,
On the path towards heaven, each shall wield their own.

- Description from Novelupdates

[Character Deleted.]I deleted the character I had been raising for over 5 years.To finally defeat the final boss of Demon Fantasy—the one I could never quite beat.For the sake of defeating ‘Baal’.“…I can just start over. I can do it.”And then…[Special reward has been granted!]“What? A mythic-tier trait?”The perfect opportunity had arrived.“This time, for sure!”I’ll raise the strongest mage and take down Baal!At least, that’s what I thought when—[Welcome to Demon Fantasy.]I found myself inside a world teeming with 666 kinds of demons.And I had the ‘special reward’ I just received!“…Fine. Let’s see who wins this.”I was confident.After all, I’ve been a veteran of this game for 10 years.

“Ryan was transported to a world of swords and magic, and he discovered that he was contracted with a system that made him stronger as long as he continued to practice basic magic!

When everyone else was learning all sorts of fancy magic, Ryan was keeping a low profile practicing foundational magic!

“Ding! Congratulations to master for completing foundational magic training 10 000 times. You obtained [Spell Casting Speed X10]!”

“Ding! Congratulations to master for completing foundational magic training 100 000 times. You obtained [Complete Fire Elemental Magic]!”

“Ding! Congratulations to master for completing one million times of blade-drawing. You obtained [Domain of the Laws of Magic, Saint Mage Rank]!”

Thus, after practicing foundational magic for billions of times, when Ryan unleashed his foundational magic, he realized that no one could rival him!”