The Regressor Can Make Them All - Chapter 36

After all, transmigrators of this era were no simple matter. Some became slimes, others turned into treasure chest monsters, and some were even reduced to mere skull--such things were all commonplace.It was nothing more than playing a villain, Shiayar didn't care. Wasn't it only natural to pay some price to become stronger?[Destined Great Villain System][“Let this world feel the agony!”][Newcomer Mission: Let the young and naive Grand Duke's daughter of the Azure Garden Dukedom, Miss Silvia, experience the betrayal of her loved ones and, amidst the pain and despair, complete her transformation and rebirth.]

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.

Reborn in World of Warcraft : Mastering All Beauty

Xia Mi found himself transported into a classic JRPG game, becoming a villager in a beginner's village.His biggest wish was to save money and marry a woman from a different race as his wife, live a peaceful and worry-free life, and eventually pass away peacefully.One day, the heroes defeated the Demon King.[Name: Xia Mi][Profession: Villager]New addition: [Profession: Successor to the Demon King]“Quickly take action, Demon King! Kill all the heroes! Restore the glory of the demon race!”Wait, did something go wrong here?In the beginner's village, where Xia Mi spent his days farming and serving as a passer-by, he suddenly had an identity panel.But he was just a villager in the beginner's village!“Where is the Demon King? Where is the Demon King?”News of the Demon King's emergence spread across the continent, and every hero who came here to defeat the Demon King could see a constant stream of monsters in the beginner's village, but never caught sight of the Demon King.A villager from the beginner's village: Demon King? I'm just a villager. I have no idea what it is.