I Can See Through All Things' Information - Chapter 469 - 313: Entering the City, An Unexpected Event

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

As a troublesome Idol with a bad personality who was confident of his pretty look. All Si Ning ever wanted was to gamble and become rich overnight so he could finally buy a mansion and lots of sports car for him to finally be able to drive the latest sports car to his hometown to see his mother and sisterThen he would not feel guilty for dropping out of school and using his school expenses to gamble and lost, it was the plan he was working on and he never expected to be transmigrated to another world and turns out to be the General commanding a large army to war.“I cannot do this.” Si Ning rolled on the bed knowing this was nothing more than a nightmare as he stared at his callused hands he woke up to.Being General Si Ning of the great Xiu imperial army was nothing more than a nightmare to him.In order to survive in a world of war, Si Ning had to choose the perfect partner and rise to be a powerful person in Xiu nation.*This is BLMeans Boys love.

27-year-old Hisha, transmigrates into the body of a thousand-year-old overpowered supreme overlord who had everything at his disposal, except one–worthy companions by his side.

Hence, a tournament was held to choose the best out of the most beautiful, unique and strong women across the land.

These women don't follow the rule of coexisting women in a harem, they fight for the right to bed their lord and would stop at nothing but to use every opportunity to seduce, and fight on his behalf just to get his attention and favor.

Hisha never liked such a barbaric method of getting a companion.

'Why choose a few, if you can have them all?'

'If he can't have them all, he would try to work out coexisting the strongest for his pleasure and benefit.'

He realizes his 'Desire System' levels him up with every adoration gotten from his harem. The stronger they get, the higher his level and hold in his world.

As he continues to break his limits with the help of his harem, he finds out there are others that threaten his rule and the balance of his land.

'Let the tournament begin!'

Among the demons, the supreme ones are called “Great Saints.”

A young man leaves his mountain village and travels around the world. By unceasing efforts, he finally becomes a legend of the age.

- Description from Novelupdates