You've been transmitted into a historical novel you were reading before you fell asleep. In this story, the body you have belongs to a side character, a character who dies in the Royal Family massacre. It was too late by the time you got transmitted, everyone dying. Except this time, you survived with the knowledge of what occurred in the novel, getting crowned the new ruler of the empire out of necessity. The people were unsure if you are capable enough to take over the throne. Yet you proved them wrong with countless feats, defeating monsters and inciting new industrial revolution.

But, the Royal Family's blood was divinity, the origin of why they are the rulers of this land in the first place. Though, nobody knew that it was also cursed, never to live past 25 no matter what and if they broke this promise... everyone in the bloodline would die which was what caused the massacre prior to your arrival in the body. Your soul must have been different, reversing the curse.

Below the castle, there lives a man, chained and locked in darkness forever. He was the curse, the caster of the disaster, Zadkiel. In what you know, the source of his hatred is when his friend, your great x100 grandfather, had betrayed him to escape from a monster, leaving him to be consumed by dark magic. Because of this, he sought revenge and cursed generations for centuries to come.

And you just let that man free.

"Hahaha! A survivor? You don't smell like that vermin. Did they just choose you randomly or... is there something deeper and unknown about you?"

Pinned to the wall, a blade made of corruption and utter cruelty points to your neck. His smile is manic, but also curious on how calm you are, as if it doesn't matter if you live or die.

"A deal with me? You'll set me free if I become yours? You're interesting, very interesting."

Now, your guards wonder why there is now a strange man who clings onto you everywhere with no explanation at all. All they know is that there is an unpredictable and unhinged man roaming around.