MTL - Start with Batman - Chapter 269 "Special case"

The world was once at war with 10 alternate worlds. This was known as the Concept War and our world won 60 years ago. All of this was concealed so no normal people are aware of this fact in the current time.

After the death of his grandfather, the high-school student Sayama Mikoto is suddenly summoned by the giant corporation IAI. He learns this world is headed for destruction due to the acceleration of the Minus Concepts. To prevent this, negotiations must be undertaken with the survivors of the other parallel worlds so their 10 concepts can be released.

And so Sayama is caught up in the final battle to clean up after the Concept War which left behind so much enmity.

He holds a god-level sign-in system in his hand, punches the goose factory, and steps on the pig factory. Do you think there is no good game?
First feed you two mouthfuls of tainted milk powder, and then send you the legend of the dragon and the Hearthstone gold cartoon for free.
What? Still not satisfied? League of Kings out-of-print skin, give away!
Satisfied? Tch, this is just the beginning…

- Description from novelbuddy

“What’s it like to be sought as a billionaire businesswoman’s long-lost son?”Thirty years ago, the billionaire businesswoman Song Yazhi accidentally lost her child.Thirty years later, Qin Yuan returns to the country in a low-key manner.No one knows – At this moment, he already controls trillions in wealth, hailed as a mysterious financial tycoon, dominating the business world!And on the very day of the reunion— The investment fund under Qin Yuan’s name is secretly plotting to acquire the hundreds billion-yuan company his mother built from scratch!It’s helpless.Qin Yuan had to come clean.“Mom, people out there say I’m lucky, a reincarnation genius. But I’m not bragging — your son really doesn’t take your fortune in eyes!”Qin Yuan declared domineeringly!Then, with this casual move, he helped save his mother’s home appliance company from bankruptcy!The latest China Rich List was announced!Qin Yuan— rose to the top, becoming the richest man in China!His mother, Song Yazhi—ranked second!

Due to investigating an arms case, he was forced to become a gigolo, from then on, the cute little loli, the sweet and pure young married woman, the cold and aloof CEO beauty, and all kinds of other beauties surrounded him.