How to Be a Dark Hero’s Daughter

That’s what they said in the Mage Tower.

“Sister, he told me. When the time comes for all people to die… my blood will be the antidote. He told me to choose. Whether to use the antidote to decide who lives and who dies, acting as I please and seeking revenge… or just to watch everyone die.”

“Will you do that?”

Ko propped himself up on the bed with his arms and looked at me.

“It was tempting. Kiki is dead, and my blood will become powerful. People will treat me like a king.”

“Right. If you give them the antidote, anyone would.”

I nodded in agreement.

“With it, I could’ve commanded you to stay by my side, right?”

Ko whispered.

“If I was a vampire, what would you give me?”

“Anything you ask for. But would you ask?”

I stared at Ko silently, implying whether he intended to threaten me. It felt like Ko was making a sad face.

“You’re right, sister. I wouldn’t. Because you… treated me warmly. You brought me to this mansion, took care of me, and looked after me. That’s why I don’t feel pain here anymore.”

Ko touched his heart.

Suddenly, I was curious. I wondered if his heart was still beating like a human’s.

“Sister, I could already read.”

Ko whispered.

“After becoming like this, I suddenly saw the letters. But I liked that you paid attention.”

“…I didn’t know.”

“If Kiki was alive, you would have helped her too, right?”

I nodded without hesitation.

“Yes. I can swear that.”

Ko smiled slowly.

“Thank you for saving me, sister.”

“…”

“I’ll give it to you. The key… to save everyone. I can do anything for you. I thought you’d want to save everyone.”

I was breathless hearing his words.

“But if I want to give a lot of blood, I need to replenish my strength. Drinking the blood of a powerful human will give me strength. I can now see who has great power.”

I nodded.

He held out his hand and gulped. Ko swallowed his saliva.

“Don’t worry. You won’t become like me.”

Ko planted his lips.

I closed my eyes slowly. An ecstatic sensation spread through my body from my wrist.

* * *

The moment I opened my eyes, I ran towards Collen’s room.

“Dad, I can solve everything.”

Collen, who had just returned from outside, looked exhausted. He was shocked by my words.

“What did you say?”

“There’s an antidote.”

“What the hell are you talking about? Where?”

“It’s here. The antidote is in this house.”

“…!”

“Vampire blood can be detoxified by vampire blood.”

I swallowed.

“Please do as I ask, quickly!”

I grabbed Collen’s collar.