No one knew why a student went missing from the school every few months. The police always dismissed the cases as runaways, but Felix never believed it. And then he met Hwang Hyunjin. Hyunjin was the type of person you either admired or hated. Tall, arrogant, always impeccably groomed, and wearing that annoying smirk—as if he knew something the rest of them didn't. Felix had loathed him from day one. And by all accounts, the feeling was mutual. They argued almost daily—in class, in the hallways, after school. A single remark was all it took for them to snap at each other. But one rainy night, Felix saw something he wasn't supposed to see. Hyunjin was standing in a dark alley over an unknown man. His eyes were a vivid red, his fangs bared, and a drop of blood trickled down his chin. Felix froze. Hyunjin slowly turned his head. "So, now you know," he said calmly. Felix bolted. He had barely run a few meters when someone grabbed his wrist and pinned him against the wall. Hyunjin didn't even look out of breath. "Normally, I’d have to kill you right now." "Then do it." Hyunjin smirked. "What a shame. You’re starting to amuse me." After that night, everything changed. Hyunjin refused to leave Felix alone, since he already knew too much. In return, Felix decided to find out what Hyunjin really was—and why people in the area kept disappearing. They hated each other. They didn't trust each other. And yet, they were forced to stick together. "You're not my friend." "Not a chance." "Then why do you keep saving me?" Hyunjin paused for a moment. "Because if you died... I'd have an annoying amount of paperwork."