The morning air stung as Ha-rin stepped off the bus, the familiar red-brick walls of Sehwa High rising up like a barrier she wasn't sure she could cross. She was wearing the blazer Min-ji had washed for her; the scent of laundry and cherry blossoms was the only thing making the crowded hallway feel bearable. It was a soft, clean smell that reminded her of the quiet apartment in Room 402 rather than the damp, heavy air of her own home. She felt like a guest in her own life.
Miles away, the atmosphere was different. The back room of a 24-hour mart smelled of ozone and stale coffee. Detective Yoon leaned forward, his eyes fixed on a grainy monitor that flickered with static.
"There," the clerk said, pointing at the screen. "The backup generator kicked in just in time to catch the transaction."
Yoon watched the footage. It was black and white and stuttering, showing a figure approaching the counter. They were wearing a heavy padding jacket. Even through the low-resolution feed, the garment looked expensive, with a distinct quilted pattern on the shoulders that caught the light.
"That's the jacket," Detective Han whispered, leaning over Yoon's shoulder. His usual playful tone was gone. "Monday morning, 03:45 AM. The same one Lee Ha-rin was wearing in the elevator footage."
Yoon watched the figure on the screen. They moved with a steady stillness, paying for the bottles of bleach and the industrial wrap as if it were a routine errand.
"She didn't sell it," Yoon said softly, watching the hooded figure leave the store. "She was out in the middle of the night using it as a shield."
Back at Sehwa, the social divide was absolute. In the cafeteria, the center tables were unwritten territory, reserved for the Gold Class. Usually, Ha-rin sat there by right, surrounded by the girls who had known her since primary school. But as she entered the room today, the map had changed.
Min-ji was sitting at the center table.
She was tucked between Seo-yeon and the other elite girls. Usually, a Silver Class student like Min-ji stayed on the outskirts, but now she was the one leaning in, listening to Seo-yeon whisper.
"I'm telling you, it was a mess," Seo-yeon was saying, her voice low. "If my parents found out I was at that club, I would have been in so much trouble. I still don't know how you managed to get that footage deleted."
Min-ji gave a shy, modest smile. "It was nothing, Seo-yeon-ah. I just knew which guard was on duty. I'm just glad I could fix it before anyone saw."
"You're a lifesaver, Min-ji," Seo-yeon said, patting Min-ji's hand. "Seriously, you're so much more helpful than I expected. Some people have just been so... distracted lately."
Seo-yeon's eyes flicked up and landed on Ha-rin. The warmth vanished instantly. "Oh. Ha-rin. You're finally back. You look a bit tired, honestly. Maybe you should find somewhere quiet to sit and pull yourself together. We're in the middle of something."
Ha-rin felt a sting of humiliation. She looked at Min-ji, expecting her to say something. But Min-ji just gave her a sweet, supportive smile—the same one she had used in Room 402. It was a look of deep pity.
"Do you want to sit with us, Ha-rin-ah?" Min-ji asked softly. "I can move my bag."
"No," Seo-yeon snapped. "There's no room. Ha-rin can go sit in the library if she's going to just stand there staring."
Min-ji looked back at Ha-rin, her expression full of apology. "I'll see you after class, okay? Don't be sad."
Ha-rin turned and fled toward the library on the third floor, her vision blurring. She found the furthest desk in the back. She slumped into the chair, her hands automatically tugging at her cuffs. She raised her unlit phone, checking her reflection in the black screen. Her lip tint was faded, and she looked haunted.
"I thought you'd come here."
Ha-rin jumped. Doh-yun was standing at the end of the aisle. He looked like he hadn't slept.
"Stay away from me," Ha-rin hissed. "I saw the photo, Doh-yun. I know what you're hiding in that bag."
Doh-yun stared at her, his face pale. "The photo? Ha-rin, listen to me. I didn't take that photo. I found it."
"Liar," she whispered.
"I found it taped to the inside of your locker while you were out," Doh-yun said, stepping closer. "The police were doing their sweep, and I saw the corner of it sticking out. I took it because I thought someone was trying to set you up. I was going to ask you about it at the park, but you bolted."
The world seemed to tilt. "My locker? But... I haven't opened my locker since before the blackout."
"Exactly," Doh-yun said. "Someone put it there to make you look guilty. And then they moved it into my bag so you'd find it and stop trusting me. Where is the photo now, Ha-rin?"
Ha-rin's heart felt squeezed. "I... I gave it to Min-ji. She said she'd keep it safe."
Doh-yun closed his eyes. "Min-ji? Ha-rin, have you actually looked at her today? Since you've been gone, I've seen her standing at the lockers... she was checking her lip tint using her black phone screen exactly the way you do. Even the way she's sitting in the cafeteria... she's not just helping you, Ha-rin. She's studying you."
Ha-rin looked down at her phone, then back at Doh-yun. The realization was a cold shiver down her spine. Min-ji wasn't just a friend. She was a mirror, reflecting a version of Ha-rin that was slowly being perfected, while the real one was left to fade in the shadows of the library.
