Shikkaku Mon no Saikyou Kenja~ Sekai Saikyou no Kenja ga Sarani Tsuyoku Naru Tameni Tenseishimashita~ - Chapter 75 Strongest Sage, Nullifying

Lucius Lothra, a passionate gamer suddenly find not just himself but the whole world in a fantasy world where Knights and Mages exist.All Earthlings who once played a VR Game called System Online wake up in this world with their own Systems which they created when playing System Online. Lucius had just created an account when a world ending event occurred so he didn't play the game but he did manage to create his own system.The only problem that Lucius has is that he doesn't know if his system works or not and the only way to find out is... DEATH!!!

The oldest myth between heaven and earth reappears in the world, countless spaces begin to slowly interweave, and the dark side of the world quietly emerges.

Advocate the friars who are weak in flesh and blood and eternal in spirit. Showing a tyrannical body, there is my invincible martial artist.

Looking at the changes in the world, Lu Ren exhaled in a panic.

“Ding, because of your uninterrupted breathing for 26 years, you suddenly realized something, and successfully realized the breathing technique.”

Hearing the prompt sound in his mind, Lu Ren waved his sword hesitantly.

“Ding, because you were blindly poking a few times with your sword, you suddenly realized something and successfully learned basic swordsmanship.”

After a long time, he looked at the army invading from another world, raised his long sword and slashed it out.

In an instant, the endless air waves rolled back, and the mountains and rivers where they passed collapsed, and the rivers fell.

Then the army was annihilated and bombarded towards the different world. The entire other world was completely shattered by the explosion of infinite fire, and slowly disappeared into the air.

- Description from novelbuddy

Standing before you are:

Guardian and patron of darkness,

Disruptors and Reshapers of Order,

creator and persecutor of licking dogs,

The tea master, the goddess of the dark night, the nightmares and gravediggers of the gods,

The true ancestor of blood – Charlotte de Castel.

With madness, with blood, with curse, with destruction.

This is a legend belonging to the blood family…

- Description from novelbuddy

Our protagonist Caam is a man from Earth that was reincarnated into this world as a demon. In order to survive, he spared no effort in avoiding the sparks of battle and without noticing it, he became strong himself.