MTL - Bourne: Command and Conquer - Chapter 16 , riding the face

An ordinary (?) grandfather, Choi Chuntaek. In an effort to protect his granddaughter, he started the virtual reality game 'Arkstar.'

Then... he accidentally obtained a legendary class?

Lin Wudao has traversed, and there is an invincible corpse collection system.

As long as you collect the corpses for the strong, you can get the things they owned or touched as rewards during their lifetime, and the obtained items are still strengthened.

Lowest, ten times stronger!

[You collected the corpse of the great emperor Jiang Taichu, and gained ten thousand years of cultivation! 】

[You collected the body of your fiancée Jiang Qingxue, obtained the Zichen Sword, a humane spirit weapon, and after strengthening it ten times, it was upgraded to become an extreme spirit weapon, the Xuantian Ancient Sword! 】

[You collected the bones of an immortal, obtained a ray of immortal origin, enhanced it by 100,000 times, and upgraded it to become the original origin of Hongmeng. After refining it, you can be promoted to the immortal emperor! 】

…

Since obtaining the invincible corpse collection system, Lin Wudao has embarked on an invincible road that can push through the ages and suppress the heavens.

- Description from novelbuddy

Synopsis is in the beginning first chapter, so you can try to read it first.Zhang Fei is an ordinary human, but he is also an Incubus, and he also a Heavenly Fox.

The first phase of the tiran impact lasted for a whole day. Asteroids falling into earth, releasing and spreading strange green gases into the air. This has mutated or should I say, Zombified humans who were infected, Mutated monsters, and alerted alien races about the existence of earth.Those who survived for 24 hours recieved a chance to survive what was to come as that wasn't the end.Dexter was always a person who didn't care about the world. However, becoming a vampire in the apocalypse was something that he never anticipated. But it was a must if he wanted to leave his hiding spot which was surrounded by monster zombies.While restraining himself from giving into his urges to drink blood, he struggles to keep his sanity intact.Time and time again he refuses to become a lawless bloodsucker.Well, he would rise, facing different adversaries and foes, developing from the once weak and feeble human, into a vampire god....Make sure to check out this fl book 'Disguised as a boy to attend Belmont High School'.