The Demon King is an Idiot [BL] - Chapter 20: Something is definitely wrong here

In a modern world where cultivators need a place to cultivate or vent their boredom, there are private businesses that set up instance dungeons with the aid of technology and cultivation magic to enable cultivators to train and commoners to experience the life of cultivation. They are called dungeon suppliers.
Xie Jin's one and only dream was to be a dungeon supplier and when his only relative passed away, the relative's inheritance gave him a plot of land and surprisingly, a 'System' Module which the relative had previously used.
With the help of the system, Xie Jin decided to pursue his dream of becoming the number one dungeon supplier.

Hundreds of years ago, Human, Celestial Clan and Demon Clan lived together on the Origin Continent. However, a great war broke out between the three races. Shan He, the leader of Human, had discovered a catalogue of methods to forge Divine Weapons. With this catalogue, Shan He led Human to defeat the other two clans and expelled them from the Origin Continent.

The peace did not last long. After the passing of Shan He, the once Glory Empire collapsed. Various forces of Human fell into a long period of wild war for the Divine Weapon Catalogue, but the catalogue was lost during the war.

The Demon Clan took advantage of the internal strife of Human. Under the lead of their new lord, Fen Tian, the Demon army invaded the Origin Continent violently.

Human soon lost a large portion of their territory. At that moment, a mysterious hero suddenly appeared on the battlefield. With a legendary Divine Weapon in hand, he severely injured Fen Tian and forced him to retreat. The united Human army chased the Demon army across the strait and to the Two Realm Plain on the Tranquil Continent.

Once again, the various forces of Human started wildly searching for the Divine Weapon Catalogue…

- Description from Novelupdates

A new world, filled with mysteries and deadly dangers. New faces, hiding their true intentions. Horizons beyond his wildest dreams. The world of Ice and Fire has opened its gates to him—there is no turning back.Born into a family of ordinary knights, he has no powerful benefactors, no secret knowledge of what lies ahead, and only a vague understanding of this world’s ways. But one thing is certain—he will never stop moving forward. Intrigue, betrayal, enemies—mere obstacles on a path he will carve with his own hands. His life will become a legend, but what kind of legend? That is for him to decide.The first step has been taken. Welcome to a journey that will shape the fate of Planetos.

In the business world, legend has it that he’s cold-blooded and ruthless. Yet at home, he dotes on his beloved wife to the bones.

‘Why am I married to this demon?’ After accidentally provoking a certain demon, she becomes his possession. From then on, she is forced into a shameless, wanton life…

“Mr. Pei, is there anything that you’re dissatisfied with Mrs. Pei about?” a reporter asks.

Mr. Pei’s dark eyes narrows. ‘The only thing I’m not satisfied with…’

Mr. Pei answers brazenly, “Lasting for only five minutes after charging for two hours.”

Mrs. Pei’s cheeks instantly turn red and she curses inwardly, ‘This darn perv!’

The reporter asks again, “What about you, Mrs. Pei?”

Gritting her teeth, Mrs Pei replies, “Lasting for two hours after charging for only five minutes!”

That night, Mr. Pei smiles wickedly after lasting four hours. “Are you satisfied now?”