"Serey is the Night King's most beloved eldest son. In the distant past, Serey was the most aggressive and violent lord among the Night Race, waging war everywhere, never resting.
Every time Serey toppled a city, he would judge the people: either join the Night Race or die.
Under the threat of death, few could refuse the allure of the Undying Body. Because of this, Serey's legion grew stronger day by day, invincible. In the long and protracted warfare lasting hundreds of years, it could be said that more than half of the Night Race's territory was expanded by Serey."
Fuen added, "These records were obtained from ancient texts, and some from the mouths of fellow Undead. As for Serey himself, he never mentions his years of conquest."
Bologue said, "The Serey of now and the Serey of the past are almost like two different people."
"More than just two people, I am really curious about what Serey went through to become like this.
