My Dad, the Demon King, Is a Big Problem

The list of ingredients scrolled upward on the system window, taking a while to display all 23 items.

But I didn’t need to read the whole list.

This 𝓬ontent is taken from fгeewebnovёl.co𝙢.

“This....”

It was identical.

These were the exact same ingredients I’d discovered before.

How could this be?

Every component was the same as the recipe I had painstakingly memorized.

And all the ingredients came from the human realm. That’s why I’d never considered the possibility that the potion had been created in the Demon Realm.

But here I was, in the Demon Realm.

Gripping the vial tightly, I looked around the room.

Not even the faintest trace of another presence could be felt.

Who?

Who owns this place?

“Come out right now. Who’s the owner of this lab?”

My hands trembled.

Whoever created this potion and gave it to my father was my mortal enemy.

If it weren’t for this potion, my dad wouldn’t have turned into the Demon King overnight.

But my shout only echoed back to me. There was no response.

Could this really be an abandoned lab?

Was no one going to show up?

How had I ended up here?

I retraced my steps, searching for a way out.

I finally spotted a staircase leading down on one side of the wall. Just as I was about to descend, I heard footsteps coming up from below.

Thud. Thud.

The sound was slow and deliberate.

My heart pounded louder with each step.

Who could it be?

Was this the demon who had forced that accursed potion on my dad?

I gripped my sword tightly, ready to strike.

Thud. Thud.

The footsteps continued. A shadow stretched along the staircase, growing longer with each step.

Judging by the silhouette, the figure had short hair. A male demon?

Let’s see what kind of scum he is. Then he can face my revenge.

Gritting my teeth, I steadied my blade.

Thud. Thud.

Finally, the back of the figure’s head emerged at the top of the stairs.

Blue hair? Or was it black? Maybe brown?

The dim light made it hard to tell.

I narrowed my eyes, focusing on him.

Then, he turned to face me, and his features gradually came into view.

Tousled blue hair, a stark white forehead, and a sharply defined nose.

Deep, jet-black eyes....

My grip loosened.

Even my knees felt weak.

The other person’s eyes widened slightly, as if just as surprised.

Those eyes were unmistakably familiar. I had been with him only moments ago.

“Why are you....”

“Crescent...?”

“Why are you here?”

My voice cracked, rising with panic.

My heart felt like it was about to explode, blood rushing wildly through my veins.

Why was Cyrillote in the Demon Realm?

Why, of all places, did he have to be here—in a place tied to my greatest enemy?

“How are you... Was this a mistake on my part...?”

A conflicted expression crossed Cyrill’s face. His pale complexion looked almost ashen.

He seemed just as troubled by my presence as I was by his.

But his emotions weren’t important to me.

“Explain yourself. Why are you in the Demon Realm?”

The Demon Realm was inhabited only by demons.

There were exceptions, like me, who had been forcibly dragged here, but Cyrill didn’t seem like someone brought against his will.

I couldn’t make sense of it.

Cyrill ran a hand over his mouth and lowered his head. With a deep sigh, he finally spoke.

“I came up here thinking there was an intruder, but it turns out to be you, Crescent....”

Was he joking?

“Answer my question!”

My voice snapped with icy sharpness.

Cyrill lifted his head, his eyes filled with regret.

“I wasn’t planning on being discovered so soon. I guess I have no excuse.”

His black eyes darkened further, like a void pulling me in.

That made my blood boil even more.

“Are you telling me... you’re a demon?”

I didn’t realize my voice was trembling.

My whole body shook, barely managing to stay upright with my sword in hand.

Was Cyrill really a demon?

How could this even be possible?

He had been with me at the orphanage. Had he lived in the human realm as a demon since he was that young?

Or was it—

“I’m sorry, Crescent. I planned to tell you everything when the time was right. I never wanted to deceive you, but I couldn’t reveal my true identity.”

“....”

The sword in my hand lowered slightly.

My strength seemed to drain from my body.

Cyrill’s gaze was cold and sorrowful, like rain-soaked glass.

Was he really admitting to being a demon?

Why wouldn’t he deny it? Why wouldn’t he say I was wrong?

But instead, he confessed so easily?

My head spun, my chest felt like it was caving in.

It became hard to breathe.

“One of the items I gave you must have contained a Demon Realm transfer stone. It’s connected to this lab. Since it’s so old, it probably malfunctioned—”

“I don’t care about that.”

I cut Cyrill off, my voice cold.

How I got here didn’t matter.

What mattered was that he was a demon.

I sneered at him with all the disdain I could muster.

“You disguised yourself as a child and pretended to be human? That means you’re not just any ordinary demon, right?”

“You don’t have to ask me like that. I’ll answer everything you’re curious about, milady.”

“Don’t call me milady. It makes you sound like you’re still my friend Cyrillote.”

“....”

Cyrill fell silent.

A demon, looking hurt? How dare he.

My mind grew colder than ever.

Saints, can you tell me who this bastard really is?

I directed my question at the system.

What kind of demon was he?

He couldn’t possibly be low-ranking. Maybe mid to upper-tier?

If the saints didn’t answer this time—

Ding!

<“Dragon Slayer Sylvester” says Cyrillote is the third-ranked demon in the Demon Realm, the Duke of Time, Cyrillote Eldoret.>

“...Ha.”

I let out a bitter laugh.

I had assumed he might be a mid-tier demon at best. Anything more was beyond my imagination.

But the third-ranked demon in the Demon Realm?

The Duke of Time himself?

It was so absurd, I couldn’t even process it.

I thrust the potion bottle toward Cyrill.

“You know what this is, don’t you?”

His gaze fell to the vial in my hand. His expression remained unchanged.

“Did you make this? This was in my house the day my dad became the Demon King. Was this your doing?”

Cyrill slowly looked away from the vial and back at me.

There wasn’t a hint of surprise or unease in his face.

He already knew who I was.

Finally, he spoke.

“That potion gathers the scattered fragments of the Demon King’s soul into one.”

“....”

My heart thudded painfully in my chest.

Hearing him admit it so calmly made my blood boil.

“It took hundreds of years to complete. I started working on it right after His Majesty’s demise 500 years ago.”

“....”

“I wanted to bring His Majesty back.”