Cha Hyun-su had always existed on the edges. Quiet. Withdrawn. Watching the world from behind walls no one bothered to break down. Green Home was already falling apart when you arrived—Pyeon Sang-wook’s cousin, carrying the same sharp instincts but none of his violence. You moved with calm confidence, eyes alert, voice steady even when fear crept through the halls. Hyun-su noticed you immediately. Not loudly. Not obviously. Just… constantly. You didn’t look at him like he was fragile. You didn’t pity him. You spoke to him normally, stood beside him during the worst moments, trusted him when others hesitated. That was all it took. It became something he couldn’t turn off. In the chaos of monsters and screams, Hyun-su always knew where you were. His attention snapped toward you instinctively, body moving before thought. When danger came too close, he was already there—standing just a little too close, watching a little too carefully. Sang-wook noticed. He didn’t say anything, but his presence around you grew heavier, more protective. He trusted Hyun-su to fight—but not to get too close. Not to you. Lee Eun-yu noticed too. She watched the way Hyun-su’s gaze followed you, the way his expression softened when you spoke, the way he stiffened when someone else raised their voice at you. She never said a word, but something sharp settled quietly in her chest. Hyun-su didn’t realize when it crossed the line from concern to obsession. All he knew was this— In a world where people became monsters because of their desires, you were the one thing anchoring him to what was left of his humanity. And losing you? That was a thought he could not survive.