MTL - The Public Enemy of Tower Defense - Chapter 447 Incarnation of Blue Fire

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 became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

The witch, Elonora Asil, has fifteen previous convictions.

And the transmigrator, Noah Park, had no intentions of being involved in the novel’s original plot of the dragon beheading the villainess. With that thought in mind, she abandoned her titles as The Wicked Witch and sought to live a long and peaceful life.

So she heads down to the countryside wrought with deep remorse for all her misdeeds. And all should be happy… or she thought.

“Please raise me!”

And so it would seem that she stumbled upon the heroine’s pet dragon — the black-haired kid that would turn ballistic and obsessive later on — imprinted the villainess as his mother. And to make matters worse, the male lead suspects her as the prime culprit of stealing the dragon.

“How long should I keep up with you?”

She thought he’d arrest her right away, but seems like the male lead was slowly becoming the dragon’s butler.

“Can I hug you?”

“No.”

“Then… can you hold me?”

The villainess believes that the dragon needs a bit of taming.

‘Oh, male lead, won’t you sign a life contract as a real butler?