Reasons

"Chu Fang, as the protagonist, is treated like the son of damn author!"

"His hero aura and plot armour is definitely off charts!"

 "Even though the name is - The Return of the Great Mercenary, it is more of an urban stallion novel."

"A cold CEO, a hacker chick along with her sister, a voluptuous policewoman, a martial art heroine, even my adoptive elder sister and how can we forget some side-innocent looking girls."

"Plot says he defeats all the villains and gets the corresponding beauty's heart in the process, all of this is bullshit!"

 "Just look at the protagonist Chu Fang's candid clothes, his crooked smile in which one can see his yellow teeths, the way he looks so lustfully at those heroines, how can a sensible woman fall for such trash?"

"Truly they all are braindead women and they call themselves heroines!"

Su Chen exclaimed while his voice kept transferring to heroines as heartfelt voices.

Su Chen remembered the reasons for his previous plot failures, hoping to gain an insight, but all of them were short runs.

The first time he failed- When he saw Chu Fang was about to succeed, he directly killed Mei Qing because how could he let himself be cucked after transmigrating? Even if it was just in name, Mei Qing was still his fiancé at that time. Only those beta, dense , wimpy shounen protagonists deserve to be cucked and he was sure that he was neither of them.

The second time Su Chen played a rogue villain, he slept with almost all the heroines secretly. He thought he was careful, but when he bedded the girl whom Chu Fang had a crush since he was 16, the protagonist's mentality collapsed and he died of depression, causing the plot to collapse altogether. 

The third time, he decided to directly run away and enjoy his rich-second generation life in a far-away country even before the story was about to officially begin, but the airplane he had boarded was struck by lightning, leading to yet another restart.

And the final time, how could he forget it… he was very careful, and in the end when he was about to send the strongest assassins he had hired to kill Chu Fang…

Chu Fang's master who knows from where appeared in front of him and directly struck his heart leading to the current restart.

But since this was the fifth and last time, with the system's green signal, he will really go out of his way and let others know what it truly means to be a villain.

...…

While others were busy eavesdropping on Su Chen's voice, a burly guy, wearing a red T-shirt and loose pyjamas entered Roorke city where everything was about to begin.

He was the protagonist of the story- Chu Fang, the one who thought he was destined for greatness.

He was already giving his signature criminal-like smile and meticulously examining every woman passing by him, occasionally giving small whistles along the way.