Ember Dragon - Chapter 209: Cassius’s Summoning

The Immortal Emperor, after being betrayed, was reborn as the peasant Luo Yang. He possessed the “Glance” ability, understood medical skills, knew martial arts, and came with a natural flair for showing off.In the long journey of life, everything is inferior; only showing off is supreme. Watch as the little peasant Luo Yang struts his stuff like the wind, ascends with vigor, all with the determination to show off so grandiosely that it tears through the heavens.

Ling Xiao was accidentally reborn into the zombie world and became Ninth Uncle’s younger brother.

Awakening the sky fire system can awaken endless strange fire.

At the same time, you can gain experience points, spells, magical powers, constitution and other rewards by burning all things in the world.

And at the beginning of the game, he awakened the mighty Qinglian Earth Heart Fire, and just as Mr. Ren came out of the coffin, he was burned to ashes by Ling Xiao’s palm.

“Senior brother Shi Jian came to kill him? Just in time, let him see how powerful the Nine Dragons Thunder Gang Fire I just awakened is!”

“The ghost king of Fengdu Ghost City is coming to arrest me? Just to show you the taste of hell fire!”

“Ding…Congratulations to the host for burning the sun, gaining experience points: 10 billion! Obtaining bloodline: Golden Crow Divine Body, turning into a new sun!”

………………

With the awakening of various kinds of different fires, and the improvement of his strength, Ling Xiao rose from a mere mortal against the sky, and finally burned the heavens and myriad worlds to create his own, the Great Dao of Heavenly Fire!

- Description from novelbuddy

The world was once at war with 10 alternate worlds. This was known as the Concept War and our world won 60 years ago. All of this was concealed so no normal people are aware of this fact in the current time.

After the death of his grandfather, the high-school student Sayama Mikoto is suddenly summoned by the giant corporation IAI. He learns this world is headed for destruction due to the acceleration of the Minus Concepts. To prevent this, negotiations must be undertaken with the survivors of the other parallel worlds so their 10 concepts can be released.

And so Sayama is caught up in the final battle to clean up after the Concept War which left behind so much enmity.