Mahouka Koukou no Rettousei - Chapter 5Volume 23 -

I am Lin Fan and I’ve become a jack of all trades just because of a powerful Encyclopedia.
In the first ever competition organised for trolls, all the other contestants lost. The crowd exclaimed, “Brother, you’re so good at trolling.”
Lin Fan replied, “But I’ve never been trolling…”

Chen Heng is called a pervert.

For killing his sexual partner, the dejected gong forced him to bind with a cheap system.

He has played a series of roles such as: the Holy Mother, a foolish idiot, a wretch, a very perverted and very cruel tyrant… The goal is to get rid of the cheap system, and return to the original world.

Confessions of the small gong:

My lover is a pervert, he is very violent, arrogant, black belly, and vicious.

But I still love him.

I want to break his wings and cut off his limbs.

Capture him, possess him, collect him, and let him be mine.

Small shou: Scram! Don’t talk to me!

Small shou: arrogant, cold, black belly, vicious

Small gong: more arrogant, colder, more black belly, and more vicious

- Description from Novelupdates

“Please, I implore you to save the world.” This is what a goddess in white says to me in a pure-white space. Such is the standard line that suggests the game is about to begin. Please say this stirring line to boys and girls with sparkling eyes! It’s wrong to direct it to someone like me, who’s exhausted from job hunting! When I declined her politely, she flew into a fit of tears; when I agreed to assist her on small tasks out of reflex, she proclaimed: “it’ll be fine if you just help in the Starting-Village Arc. Please guide the Hero!” Then she tossed me into another world. No, this is a world modeled after a game that this gamer goddess likes…

A failed investor from 2017 got drunk and woke up in the 1980s. China is just opening up, and the economy is blooming. There is also the dissolution of the Soviet Union, the bursting of the Dot-com bubble and other financial crisis. He used his knowledge of the future and slowly build up his empire.

- Description from novelupdates