Avatar - Conquering the Elements - Chapter 75. Trouble.

Ten years ago, John and his parents were transported into a game world.This young man, full of ambition to conquer the world, unfortunately awakened the weakest class—Furniture Maker.But what troubled John most wasn’t his class.Like most transmigrators, he had a system.The only problem was—This system kept granting him strange and absurd skills.[Ding! Congratulations, Host! You’ve acquired a concept-level skill: Absolute Diarrhea Technique. Your basic attacks will cause opponents to suffer explosive diarrhea until complete exhaustion. Any creature without an anus is unworthy of being your enemy!][Ding! Congratulations, Host! You’ve acquired a concept-level skill: Mummification Wrapping Technique. Bandages crafted by you can heal all things!][Ding! Congratulations, Host! You’ve acquired a concept-level skill: You may steal and copy the abilities of anyone named John!][Ding! Congratulations, Host! You’ve acquired a bonus concept-level skill: You may forcibly rename anyone to John!]…Years later, in the Divine Realm, a lone figure stood tall above the heavens.As the sacred hymns echoed, he raised a finger—And all the gods clenched their anuses in fear.

The Supernatural era descended, the rules changed, mystery arrived, and the world altered. Countless ruins of civilization emerged, and an abundance of Heavenly Materials and Earthly Treasures lay at everyone’s fingertips. Radical faction, “This is the best of times, entering a new world, excavating relics, mass evolution!” Conservative, “This is the worst of times, with countless monsters outside, once you leave the Safe Zone, extinction awaits humanity!” … Meanwhile, at a remote ruin, Lu Yuan successfully discovered new treasures and sought after the mysterious wealth, desperately trying to contact his fellow Earthlings. “Found a communicator, can it get through?” “Hey, humans—I’m almost becoming a god, and you’re still hiding in the Safe Zone?”

MC (female protagonist) dies in a plane crash and wakes up in the body of a beautiful but corrupt and lascivious prime minister in ancient times, Zhang Qinglian. As circumstances decree, he (she) cannot reveal that the original owner’s soul is gone else calamity might occur. So he (she) decides to walk a righteous path, determined to help the lovely but simple little emperor rule the country. Not backing down after facing torture, not losing courage, destroying rebellions and facing off with scheming princes.

- Description from Novelupdates

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.