MTL - The Life of a Villain Starting From Naruto - Chapter 124 so the answer is

Ascension of the Hollow Star

Xu Jun finally defeated the BOSS–the Dark Demon King, in this stand-alone, virtual reality game. When he wanted to go out to browse Weibo and express his mood, he suddenly encountered a game BUG and immediately passes over to the game world.

He became the man who finally took down the Great Demon King in this world. Gratifying! The attention of millions of people!

……However, he did not know the development of this world was not the same as the game, the Demon King did not die, rather his soul entered into Xu Jun’s body; this Demon King knows of all the stupid things Xu Jun does everyday…….

- Description from Novelupdates

John Foster, a top expert in a certain gaming studio, who once offended a trust-fund baby.

As a result, he was framed and bound with the worst talent-“Sacrifice”, in the new game “GODSLAYER” upon the game's launch day.

John was the only one among the sacrificed who insisted on not deleting his character.

Supposed to be sacrificed to The Devil, John persisted in his quest.

After being killed multiple times, he still charged towards The Devil with his flesh and blood!

[Ding: You have been killed, losing 10 points of Weapon and Equip durability.]

[Ding: You have been killed, losing 10 points of Weapon and Equip durability.] ...

After multiple failures, John was surprised to find that his skills and Exp were improving rapidly as he fought The Devil!

A few months later, when players worldwide were busy leveling up, a system notification struck like thunder:

[Ding: 'Anonymous Player' successfully killed the World BOSS - Devil 'Azazel', earning the First Kill reward!]

……………………………………………………………

Dear readers! Without any ads, maybe you will prefer .

Shao Qing’s only regret in life is that she blindly fell in love with a worthless man. She gave up everything for him, but in exchange was run over by his conniving mistress when she was close to her delivery date. Fortunately, Heaven left her a way. Crimson rain fell from the sky, the end of the world arrived, she resurrected in the morgue and gave birth to a little monster. Turning into a half human, half zombie freak; her son neither human, nor monster; they have no other choice but to rely on zombies’ crystal nuclei to develop their special abilities and continue living. This debt, she’ll definitely repay that cheating couple!