In the year 903 of the new era, an incredible thing happened in a city covering an area of 30,000 square kilometers - the population disappeared, and no matter how many organizations investigated, they found nothing.
But eighteen years later, a man walked out of this city.
He was wearing a huge black hood, his right hand was in his pocket, his left index finger was raised, and a black card like ink was spinning and flying on his fingertips.
He stood in the shadow, and when he raised his head, he couldn't see his face clearly. He could only see a pair of scarlet eyes.
He looked at the vigilant crowd around him and smiled, his deep voice pressing into everyone's heart.
"Welcome to my... World."