A boy raised by a demon king and a dragon king seems to be peerless in his school life.

Volume 1 Chapter 5 Days with the Demon King

= From the Demon King’s Perspective =

It’s been a decade since I began the boy’s training.

At first, he didn’t even have the basics of magic, but thanks to my rigorous training, he managed to grow into a fledgling mage.

I never expected him to progress at such a rapid pace, considering how he started with no magical talent whatsoever.

This isn’t because he had innate talent… I can say that with certainty.

Initially, he had not a trace of magical aptitude, as I had assessed.

However, he had an insatiable desire for power that more than compensated for his lack of talent.

It was this almost maddeningly intense desire that allowed him to endure my devilish training.

I initially took him on as an apprentice just to pass the time without expecting much, but perhaps this child might surprise us all…

Heh, things are getting a bit more interesting.

◇

- A Hundred Years into Training –

“Infernal Flame: Ultra Blaze!”

The ultra-grade magic unleashed by Ruisha hit the ground, creating a towering pillar of fire.

Yes, that’s some well-honed magical prowess.

“Testarossa-san!! How was that just now!?”

Panting, Ruisha rushes over to me.

He still looks like a cute little creature, as always.

“You did great, Ruisha-kun. But didn’t I ask you not to call me Testarossa? Come on, what should you call me?”

“U-um… Big sis?”

“…!!!!!!”

Big sis.

The moment I heard that sweet word, an electric shock surged through my lower abdomen.

It was about thirteen years into our training when Ruisha mistakenly called me “big sis” while I was nursing him after an exhausting training session. Perhaps it was his fatigue that made him slip up.

At that very moment, the maternal or rather, sisterly instincts that had been sealed away in me for thousands of years burst forth. Since then, Ruisha-kun became like a dear little brother to me.

The Dragon King looked at me in disbelief as I clung tightly to Ruisha-kun, but I didn’t care.

I would live my life as I pleased.

I had decided to live for Ruisha-kun, the one who had taught me what ‘love’ was for the first time.

Leave it to big sis. I promise you’ll return to the original world no matter what.

Even if it meant an eternal separation…

◇

“Dark Flame: Duskfire!”

The black flames unleashed by Ruisha swiftly struck the ground, engulfing the entire area in the hellish blaze. It’s safe to say it was truly impressive.

To think he could progress this far in just three hundred years of training…

This is what the power of ‘love’ can achieve, isn’t it?

“Did you see that, big sis Tess?”

“Yes, I saw. It was an impressive use of dark magic.”

Saying that, I reached out to stroke Ruisha’s small head as he approached me. It’s truly heartwarming to see how well he’s kept up with my training, despite his petite frame.

What Ruisha used earlier was ‘Dark Magic,’ which is a high-level magic that surpasses the basic ‘Five-Element Magic’ commonly used by humans. It’s a special magic that only a few elite members of the demon clan can use, and Ruisha mastered it brilliantly.

“You really… really did well.”

Memories of the days we’ve spent together here flashed through my mind. It wasn’t always smooth sailing; it was days of hardship and struggle.

Yet, strangely, it was enjoyable.

I never imagined that my days here could become so enjoyable before Ruisha came.

But, these enjoyable days are soon… coming to an end.

“Tess sis…?”

As Ruisha looked at my face, he wore an expression of confusion.

I wonder what’s going on?

“Are you crying…?”

“Huh…?”

Unbeknownst to me, a single tear had trickled down from my eyes.

Tears, something I hadn’t shed since the day I was born…

“Hehe, who would have thought that I, feared as the Demon King, would be brought to tears by a boy like you?”

“Huh?! Is it my fault!?”

“That’s right. Reflect on your actions.”

“At least tell me why!”

“No. Figure it out for yourself.”

As always, we engaged in trivial conversation, trying to forget, if only for a moment, about the impending separation that loomed nearby.

Character Profile

Name: Testarossa Satania Harlequin Nodens

Race: Chaos Blood, a Chaotic Bloodline of Demons

Title: Demon King

Age: 17 years old (Youngest Demon King in history)

Skills: Supreme Magic, Dark Magic, [Secret], Beginner in Ki Manipulation

Abilities: Magic Power: SSS, Ki: A, Strength: S, Intelligence: SS, Big Sister Factor: SSSS

She participated in the Demon King selection martial arts tournament held when she was 14 years old. Despite not receiving any attention at all, she overwhelmed her formidable opponents with her overwhelming magical power and magical abilities, earning her the title of “Demon King.”

In truth, it was her friends who secretly entered her into the competition, and she had no desire to become the Demon King herself. However, due to her inability to refuse requests, she embraced the role of the Demon King, effortlessly fulfilling her duties with her innate charisma and knowledge. Combining her natural beauty, she achieved the highest approval ratings in history, propelling the demon race into rapid development.

When news spread that she had been defeated by a hero, the Demon King’s capital reportedly echoed with mourning for seven days, a testament to the profound impact she had made.