Disciple, Don’t Cause Trouble, Master Won’t Leave the Mountain! - Chapter 19

In regards to the MMORPG Cross Reverie, Sakamoto Takuma boasted an overwhelming strength that was enough for him to be called the Demon King by the other players. One day, he gets summoned to another world with his appearance in the game. There, there are two people that insist “I am the real summon master.” Takuma gets slave-turning magic used for summoned beasts cast on him by the girls –

Elias and friends thought it was just a storm, everyone at Avonside University did, but when the clouds cleared and the sky was revealed again, they were met with a strange sky. Gone were the city lights and everything beyond the limits of their campus, replaced by a mountain wilderness. Elias is further swept away when he is torn from his friend's grasp and transformed beyond recognition. Will the newly dubbed Ryn find her way back to her friends, and or will she return to Avonside to find it ransacked and destroyed by the strange and magical forces that inhabit the new world?

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

A life filled with regrets.Once he realized his faults and decided to lead a new life, it was too late.His family was already gone.He had borne through each day with pure rage.Finally at the end of his misery, his wish reached the heavens—an unforgiven one.He goes against fate to raise his sword.