Chapter 4

Yeah, it can’t be easy. Isabella burst out laughing unconsciously when she heard the demon’s absurd suggestion.

“If it’s the son of the Demon King, are you talking about Little Duke Blake?”

“Kayden Blake. That’s what humans call him.”

Kayden Blake. Isabella repeated the name of the target again.

Kayden was notorious for being the ‘Mad Dog in the North’ or the ‘Monster Slayer’.

He was a half-demon child born of the marriage of the War hero Duke Blake to the Demon’s Princess, who was the owner of the Northern Tower.

For some reason, Kayden, a genius magician who played a significant role in securing the northern border area, has not been seen since years ago.

That’s all Isabella knew about Kayden.

‘Too little information.’

Everyone in the Empire knew him, but no one knew him in detail.

Kayden spent most of his time fighting off demons and monsters in the border area of the demon world, and did not appear in the social world.

Still, Kayden was the heir to the only duke in the empire. It was natural for the social world to draw their attention to his future.

Even though he had already come of age, he did not appear in society, and he did not find a fiancee, so only this and that rumors about him became rampant.

Maybe he has a terrible disease and his face is ruined. No, she heard his personality is cruel and violent.

Whether it’s rumors that he unleashed his true face as a demon, or that he has become a real demon because of his mother’s blood.

Only gossip, whose authenticity was unknown, spread out of control.

In order to bring him out of the tower as the demon suggested, she desperately needed “real information” about the son of the notorious demon.

“You need to give me another present.”

“…Huh?”

“The Mad Dog of the North.”

Isabella’s lips drew a slow arc.

“Give me that book, too. I’ll have to read it right away.”

“Of course, I’ll give it to you at your command.”

“…….”

With a snap of her finger, another book appeared in the demon’s hand.

“Enjoy it. This is pretty fun, too.”

Isabella, who took over the book, carefully turned the page.

Kayden Blake. A symbol of peace and the name of a humble mixed-race child.

The marriage of Duke Blake and the Demon royal daughter ended the years-long Pandemonium War. As soon as she gave birth to a son, she returned to the Demon Realm and became the Demon King, and never looked for her son again.

‘No matter how much it’s a political marriage, there’s no blood or tears.’

Even to her child, she seemed to be faithful to her duty as a demon.

‘Haha expecting a little motherhood from a demon itself is a human-centered way of thinking.’

From the outset, their combination was a thoroughly strategic relationship.

In society, a mixed-race demon was nothing but impurity. They were completely rejected because of the dirty habits of nobles.

Kayden was only seven years old when Duke Blake took his son to the royal banquet.

“Look at those disgusting red eyes.”

“It’s the demon’s son that’s at stake indeed.”

They smiled in front of him while whispering behind his back. There was also a lady who covered her eyes for fear that her child would be possessed by the demon’s child.

Since that day, Kayden has not been seen in society.

Meanwhile, Kayden showed a genius talent as a monster slayer. It was natural for him since he inherited the blood of the only swordmaster in the Empire and the Demon King.

Kayden spent most of his time at the border of the demon realm, cutting up all the demons and monsters that crossed the border.

The demon’s son cut off demons, so people began to call him the “Northern Mad Dog” because of Kayden’s incomprehensible behavior.

Regardless, he fought every single day. Until the demon in his blood bloomed when he was 16.

The demon’s blood in bloom was so powerful that it collided with human’s blood and caused a terrible mana explosion.

Burning all the magic he had, and destroying himself in the process, he was a vessel of magic. That was the case of a mana explosion. Kayden confined himself to the tower.

The average life expectancy of a human wizard who suffers from a mana explosion is about a year, suffering from high fever every day, hemoptysis, and in severe cases, seizures.

Most could not bear the pain and were bound to die.

“Of course, this is the case for humans.”

Kayden lasted as long as eight years. He had the blood of the Great Demon after all.

The amount of his magic was incomparable to that of an average wizard.

There’s only one way for Kayden to resolve his mana explosion. All he has to do is sign a contract with humans and accept the blood of the demon.

Kayden eventually refused to be a demon and went to ruin.

This was the last sentence of the book. She pondered over what she had read so far.

‘Kayden has to be a demon in order for him not to be destroyed. He needs a contractor to do that.’

In the end, the demon wanted one thing.

“To be the first contractor for Kayden Blake.”

“As expected, you’re quick-witted.”

The demon seemed to like her cleverness. She raised her eyebrows and laughed with satisfaction.

However, for some reason, Isabella’s expression was not clear.

She asked in a nonchalant tone.

“Why me?”

“What?”

“Among many people, why me?”

She already knew why the demon couldn’t take out Kayden herself.

‘It’s probably because of his dirty habit of cutting a demon when he sees one.’

Isabella rolled her eyes, recalling what she had read in the book.

‘A half-demon on the verge of destruction will be of no use. I’m asking you to take him out as a complete demon after the contract.’

But she couldn’t figure out why it had to be her.

While waiting for an answer, the demon touched Isabella’s cheek and smacked her lips.

“It’s dazzlingly white.”

“What do you mean….”

“It makes me want to ruin it. It’s exactly the style that demons like.”

Seeing the grinning demon, Isabella felt strange as if she had become her prey.

Even if Kayden was a mixed race of humans and demons, he was in an incomplete but demon-blooded state as long as he was experiencing a mana explosion.

‘He’s holding onto his reason, but his instinct is already that of a demon.’

A contradictory situation in which he hates demons but at the same time attracted to their tastes. She was going to take advantage of it.

“Again, arrogant, reckless, and quick-witted. He’s the type that’ll never fall for a demon. Who else would be the right person for him?”

She didn’t mean to correct her because it wasn’t wrong. Because she was haughty, outspoken and quick-witted.

She intended to tame the demon on his side if necessary for revenge. She has a good look at people.

‘But I can’t just throw myself away without knowing the purpose.’