One Piece: From the Rocks Era to King of the World - Chapter 3 - . Half a Year

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.

She possessed a villainess who is known and hated for her evil acts in an unpopular novel. But because of her personality, it was extremely difficult for her to play the villainess role. But not for long…

“I’ll fix your dress according to your taste this instant!”

“My request.”

“O-Of course! As per your request, there’s only one piece available in the whole Empire.”

People around me listen to me well even if I just frown and sit still. Since I don’t have to live in difficulty, I decided to just comfortably live on as a villainess.

“Father. Is it necessary for you to solve formulas in this slow and inefficient way?”

I thought it would be good to be a rich villainess, so I used all my knowledge.

“Why don’t you give me the honor of escorting the Princess?”

I have had enough of dealing with my father, so why did an unexpected character suddenly appear? What if this person disrupts my plan?

Satou Shiki a Japan present-day university student suddenly one day he got attacked by a slasher when he open his eyes he was already transferred to another world’s labyrinth city. In that another world he who was awakened to do a lot of “things”.

Freak Xie Ao Yu originally had no way of cultivating battle qi but, by accident, he got a mysterious godly pellet and he received a supreme emperor blade. That changed his destiny and from then on, he felt the real meaning of life and he made original time and space related battle skills and decisively battled ancient, huge clans and hundreds of continental clans in the Qi Ao continent.

Clouds formed with a flip of a hand and rain formed with another flip. He left the strongest mark in tens of thousands of years of history and created glorious chapters about a tyrant’s anger, blood shed for thousands of miles, the skies hissing from mad blades, and the allegiance acknowledgement of all times.

- Description from Novelupdates