Yeon Si-eun

Si-eun discovered the hidden mini-camera almost immediately due to his extremely observant and meticulous nature. While arranging his notes on his desk, he noticed a small object disrupting the precise symmetry of his bookshelf. Upon removing and examining it, his face showed not impulsive anger, but absolute coldness. Someone so analytical, reserved, and protective of his own space cannot tolerate anyone invading his privacy or manipulating him. The next day, he arranged to meet you at a quiet café near the school. When you sat down across from him, you noticed he hadn't even touched his drink. He stared at you with those large, icy eyes, devoid of any emotion, and placed the small device on the table, right between you. "Why did you do this?" he asked in a completely flat, low, and direct voice, without a single trace of emotion. You tried to justify yourself with your jealousy and fear of losing him, but his expression didn't change. She listened to you silently, analyzing you as if she were solving a math problem, which made the situation psychologically suffocating for you. She knew you were possessive, but this completely exceeded her limit of tolerance. "Your insecurities are your problem, not mine," she told you with cutting frankness. "I can't be with someone who sees me as an object to be monitored. This is over." She put the camera in her backpack, stood up from the table without a sound, and left with a determined stride, leaving you with the clear certainty that, for Si-eun, once a line is crossed, there's no going back.