Da Tang Shuang Long Zhuan - Book 7 - Chapter 7 – Mortal Danger, Escape Alive

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

Hey? Why is there a HP Bar and a Title above your head? Why do you know magic? Hey, why are there people slashing their swords at me!? What’s wrong with this world? Why is it so much like an RPG!? HEY!!

In short, MC inadvertently created a world, but as the creator of the world, he did not know the world at all. He should have lived here like a fish in the sea with some plug-ins that MCs always have. But now he is even stumped by the bugs in the instant world. Luckily, in this world he has found his shadow guard, or his lover? So the daily adventure is getting not so boring…

- Description from Novelupdates

The world mutated, the game came to reality, and monsters from other worlds ravaged the world.

In order to become stronger, in order to resist disaster.

Everyone is changing jobs and upgrading like crazy.

Some people became mages at the first turn, and some became professional thunder fighters at the second turn.

But Ling Zhan followed his own path.

At the beginning of the game, choose a non-professional casual player, and add blue to all attribute points.

“Crazy, unprofessional casual, mastered all low-level skills before changing jobs, how to fight in the later stage?”

“What’s the use of the blue bar, and it can’t increase the combat power, it’s really funny.”

…

- Description from novelbuddy