The law of Fiction: Harem in the fiction world - Chapter 149 Ch 147: A Deal [Pt1]

Crossing the Douluo Continent, or an auxiliary spirit master?

Su Xun decided to exercise his body first.

Thirteen years later, Su Xun is out!

Star Dou Great Forest…

“Golden Eagle, the white feathered peregrine falcon killed your wife, I’m here to help you get revenge, you fight, I’ll support you!”

An hour later, the uninjured Su Xun took away the dying white-feathered peregrine falcon.

Battlefield…

“I saw that Xiongtai’s brows were fighting against the air of black and yellow. It must be extraordinary. I don’t know if you can make friends?”

Su Xun stretched out his hands of friendship.

Thirty seconds later, looking at the opponent whose body was filled with black energy, Su Xun turned aside:

“Referee, you should speak up, or he will be poisoned to death!”

- Description from novelbuddy

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.

Enigmatic hands, spectral frame, and one cunning strike just like the swing of the Grim Reaper. The Supreme Assassin takes on the mystical world, and how his legendary tales sets off, progressively ascending the altar to becoming the best.

- Description from Novelupdates

A novel revolving around being transported to another world with an op system. The mc spends his day chasing skirts and doing missions to level up. A standard journey to the top with lots of girls from various animes and games with a twist of that gaming feel (hunting mobs, doing missions).

- Description from novelupdates