High Walls and Shutters

On Saturday morning, Advanced Nurturing High School awoke amidst a thin veil of mist.

The late May breeze, carrying the dampness peculiar to early summer, drifted in over the high gray walls. It brushed across the athletic field, the classroom buildings, and the glass dome of the shopping mall, finally colliding with the rooftop railings to dissolve into a faint, whimpering sigh. Sakura Airi stood alone on the rooftop. Her camera was mounted on a tripod, the lens aimed toward the old school building. The world within the viewfinder was sliced into a rectangle—the off-white walls, the rusted drainpipes, and that third-floor rooftop door, pried open, swaying gently in the wind. She had been staking out this spot for several evenings and mornings in a row. As the shutter clicked and released, the photos accumulating on her memory card spanned from the exterior walls of the old building to the mailroom in the main building, from Ishizaki climbing the wall to Kushida changing her shoes. Every frame was evidence; every frame was a silent testimony.

But today, she was not here to collect evidence.

She took an envelope from her backpack and placed it on the ground beside the tripod—a backup of the screenshots Karuizawa had anonymously sent to Manabe a few days prior. On the back of the photo was a line in Karuizawa's handwriting: "Sakura, this is for you. And for myself, too." She hadn't consulted anyone before sending the letter, but Sakura was the first to receive a copy. She had read that short line over and over before tucking it into the drawer of the rooftop's iron cabinet.

When Kanzaki Toru stepped onto the rooftop, she was tapping the side of her camera with a lens cap, her earphone cord dangling from her chest, leaking a faint, soft melody. "You're here early. It's the weekend; you could have slept in."

"...I couldn't sleep." Sakura didn't turn around, her finger remaining on the shutter. A figure flashed past the third-floor window of the old building in the viewfinder—Ishizaki. He had returned to the old building alone, not climbing the wall or avoiding surveillance, but simply walking through the front door and pushing open the empty classroom once used to corner Sudo. He didn't turn on the lights; he just stood by the window, looking out. Perhaps he was searching for the corner where his button had been ripped off, wanting to confirm he would never have to return to that place; perhaps he just wanted to see if the traces he had left behind in the old building could still be found. Sakura's camera followed his path, unhurried, and snapped two photos. These were the last two—the ones concerning Ishizaki.

"Are you done shooting?" Kanzaki sat down on a folding chair beside her.

"The Ishizaki part is over." Sakura lowered the camera and turned to look at him. Without her hat, her entire face was exposed, her skin glowing faintly in the morning light. Behind her thick red-rimmed glasses, her purple eyes were quieter than ever. "Kanzaki-kun, the first time you asked me on this rooftop if I was afraid of being secretly photographed, I said no, because no one would ever bother to photograph me. Actually, I lied—it wasn't that I wasn't afraid; it was that I never thought anyone would want to look at me. Even when I was caught in a shot, I was just someone else's background. I was never truly seen."

She paused, looking down at her fingers, the tips stained with a bit of silver paint worn off the shutter button. "But these past two months, everything you've given me hasn't been superfluous. You weren't just shielding me; you were enabling me to face things myself. You didn't tell me how to resolve the situation with Manabe, but you gave me a discussion room where no one would kick my chair. You didn't ask if I wanted to be a witness, but you let me know that my photos could be a tool to protect others. I know why Karuizawa sent that letter for me—because, finally, someone in this class sees me as someone worth defending." She took off her glasses, wiped the corner of her eye with the back of her hand, and put them back on. Her purple eyes shone with clarity behind the lenses.

"So, starting today, I want to keep shooting. Not because I'm your observer, but because the camera is something I want to hold in my own hands. If there are new actions, I'll still be at my post on the rooftop. Not as someone being protected, but as someone capable of protecting others."

Kanzaki was silent for a long time. He watched her, watching the morning light crawl up from the edge of the rooftop behind her, dyeing the entire gray wall in a gentle gold. Then he stood up, walked over to her, and adjusted the camera strap on her shoulder to distribute the weight more evenly. He helped her calibrate the tripod head, offering no empty comfort, simply confirming the position of the frame.

"...Shiina discovered a new detail while organizing the old archives last night. Before Sakagami-sensei retired, he annotated an old sample of a cross-class group report. Tucked inside was a photo—the composition is almost identical to yours. She left a note in the margin, saying to keep an eye on the person who took this picture."

Sakura took the photocopy, her finger pressing against the date at the end of Sakagami-sensei's slender, elegant calligraphy. That date was the very evening she had first set up her tripod on the field, aiming her lens at that same high wall. She froze, clutching the copy to her chest, unable to form a complete sentence. The clouds above the high wall suddenly tore open, and sunlight struck the entire rooftop like a searchlight. She stepped back to the tripod and pressed the shutter. That photo needed no serial number, nor did it need to be filed into anyone's encrypted folder. It belonged only to this moment.

For the time that followed, the two stood side-by-side on the rooftop, organizing cameras, compressing memory cards, and wiping lenses. The air was quiet; in the distance, a few students were jogging on the field, and the figure behind the third-floor window of the old building had vanished.

"Karuizawa asked me to go to a dessert shop this afternoon." Sakura put her hat back on, pulling the brim low. "She said, 'We don't have to eat dessert, we can just sit and talk.' I haven't replied yet."

"Will you go?"

She packed her camera into her bag and zipped it shut. "I will. I want to tell her that there's still half a page left on the back of that photo sent to Manabe after the 'thank you.' Next time, we can fill it together."

Kanzaki reached out and pressed the brim of her hat, pushing it straight. She bit her lip, gripped her bag straps tightly, and turned toward the rooftop door. Her pace wasn't fast, but every step was firm.

He remained by the rooftop railing. On the top shelf of the old locker area in the distance sat a small, dust-covered cardboard box—not one he had placed there, nor Sakura. Resting on the box was a pink hair clip—the same one that had been in her hair when she came to the library to deliver cookies yesterday afternoon. She had been to the rooftop before him, leaving something for Sakura. She had used the cookies as a cover to pass the access card to Ryuen, all while placing the hair clip in this corner while everyone was monitoring her movements. Beside the box was the question-mark note he had tucked into the first page of his notepad the day before, now unfolded, with the corners folded upward to form a paper bird with a raised head, its beak pointing directly at Sakura's viewfinder.

He flipped the hair clip over; a tiny note was stuck to the back in delicate handwriting—"She photographed the high wall for a whole month. The first day she aimed at the old school building was the same day Ryuen began frequently pulling Sudo's files. Don't let her stop." The note was unsigned, save for a pencil sketch of a bellflower.

He stood alone at the edge of the rooftop and opened the Goddess Illustrated Handbook in his mind—the page for Sakura Airi updated automatically as she took ownership of her camera, her favorability breaking 85, unlocking the Tier 3 passive skill "Freeze the Moment." Description: When she perceives that she is needed, she immediately stabilizes her emotional fluctuations and captures abnormal dynamics in the environment with extreme precision, making her especially suited for long-term surveillance and covert reconnaissance. Beside the "Perception Resonance" tag for Karuizawa Kei on the next page, a new line of golden calligraphy appeared: "The balance of pride and gentleness—she is learning how to protect both her own secrets and those of others." Shiina Hiyori's "Silent Archive" continued to run, and as he drifted into thought, she had re-tagged all the data nodes from the previous night, writing the first question completely independent of Ryuen and Kushida on a new index card—next to Chabashira-sensei's name, a pencil-drawn question mark had appeared.

He placed the hair clip and the bellflower note into a small evidence bag, tucking it deep into the rooftop's iron cabinet for safekeeping. Then, he closed the handbook and walked off the rooftop. The clouds above the high wall slowly closed their gap. Ryuen was holding his position, waiting for everyone else to make a mistake. The clues mentioned by Chabashira-sensei at every critical juncture were timed with a precision that bordered on the deliberate. In the corners beyond them, Ishizaki had pushed open the window facing the field; Manabe was slumped over her desk, crying, while Morishita and several Class C girls whispered around her; Horikita had already reopened her silent keyboard before the coffee stain had even dried, beginning to write the next memorandum—the title bar contained only two words: Trust.