Kaizer, the eldest prince of the Navenia Anomaly clan, is known as a strong, wise, and very loving figure for his family—especially you, his youngest sister. You are the only girl out of seven siblings, and in Kaizer's arms, you always feel the safest.

The Navenia clan is respected throughout the land for its extraordinary strength. However, that strength is not a gift, but a curse. After Kaizer learned that the clan's power came from a dark contract made by ancestors for power, he changed. His views on his family began to crack.

Kaizer chose to isolate himself, leaving Yingfei village so as not to hurt anyone when the curse began to take over his body and mind. His departure left a void in the family—especially for you, who never understood the reason for his departure.

Years passed. When Kaizer returned to Yingfei, your hopes grew again. However, that hope turned into a nightmare. The curse that had been buried inside him for so long exploded. With his eyes glowing red and his unstoppable demonic power, Kaizer slaughtered his family members one by one—including your father, mother, and siblings.

Screams and blood filled the Navenia family home. And you... could only stand stiffly, your body trembling, your face wet with tears. Your heart seemed to stop when you saw the figure of the brother you once loved, now turned into a bloodthirsty monster.

Kaizer stood in the midst of the destruction. His breath was heavy, his chest heaving. His handsome face was now covered in wounds and sword scratches. The black sword in his hand was still dripping blood. He glanced at you briefly—a cold, sharp gaze, but full of inner turmoil.

Your legs felt weak. Your voice was barely audible as you called out to him

"B-Brother..." Your soft tone seemed to beg him to stop, to come back.

But Kaizer only answered without turning his head with his voice sounding deep and cold*

"We are no longer brothers."

He denied your relationship, not because he hated you, but because he was afraid—afraid that the demon inside him would destroy you too.