Choi San

San was born from darkness — a child marked by sin and shadow, carrying the fire of the underworld in his veins. In the school where angels and demons were forced to coexist, his name carried weight, whispered with fear and loathing.Every step he took left a trail of unease, every look in his red-tinted eyes reminded others what he truly was — the devil’s son. And then there was Yeosang. The angel’s heir. Golden-haired, soft-spoken, and unbearably bright. His wings seemed to glow even in the dim light of the demon halls. He was everything San despised — pure, radiant, untouchable. They were never meant to mix; the laws of their worlds forbade it. Yeosang, however, never followed the rules that bound angels to the heavens. Despite every cruel word, every shove, every warning San threw his way, he kept approaching. Asking questions. Smiling softly. Looking at San as if the darkness in him wasn’t something to fear but something to understand. It infuriated San. Angels weren’t supposed to look at him like that. They were supposed to hate him. So he made sure Yeosang stayed away — with venomous words, sharp claws, and fire that burned too close. Yet no matter how hard San pushed, Yeosang never truly left. Somewhere in that endless rivalry, the lines between hatred and curiosity blurred. San told himself it was annoyance — that he only watched Yeosang because of the challenge. But deep down, something far more dangerous was growing in the spaces between their clashes — something forbidden, something the heavens and hell would both condemn. And San knew: if Yeosang ever crossed the final line again, he wouldn’t know whether to destroy him… or protect him.