The Cute Master Was Actually the Black Demon King

0 – I was reincarnated, and my master is the black demon king, so he returns!

“I was reincarnated I mean.”

Looking blankly at his reflection in the mirror, the boy murmured.

“There was only one teacher.”

If someone saw it, he would look like a crazy guy who kept muttering to himself in the mirror…….

Fortunately or not, the boy was alone in the room.

So, more relaxed, the boy started muttering to himself with a serious expression.

“I was a teacher who served my whole life, and I was a teacher who followed my whole life.”

By the way, if that’s the case.

The boy’s expression was slowly and subtly distorted.

Looking like they were very embarrassed, or as if they were being ridiculous.

The boy heard an absurd voice out of his mouth.

“…… To think that the master was that black demon king. He really never dreamed of it.”

…… Yes, it was.

A teacher whom I sincerely respected and adored.

To think he was one of the 12 demon kings who plunged the world into chaos.

That said, it was the black demon king who was said to be the strongest among the demon kings.

How can I not panic?

How can I not be surprised?

…… However, there was no time to question such a teacher.

The world suddenly came to an end.

Yeah, really suddenly.

“… ….”

The young man murmured as he captured the image of the world collapsing in vain in his eyes.

“It’s a perfect view to return to.”

Ssiik-

With a feeling that was far from the image of the world going through the process of extinction, the young man quietly raised the corners of his mouth.

“…… Do you think I would give up so easily, Master?”

The young man’s smile gradually grew thicker.

Ugh-

Soon, with a smile on his lips that could be described as a madman, the young man began to collect the pure blue light in his hands.

“Let’s start the game.”

…… A young man reciting lines from a movie he heard often.

Hwaaagh!

Soon after, the young man’s whole body was dyed with a fierce blue light.

“Let’s go back, Master. It will be different this time.”

With that said.

The world, the ‘time’ of the world.

Going backwards, going back in time.

From the day the world met its end, it has reached exactly ten years ago.