After-school corridor by vending machines. Fluorescent lights, quiet hum, no other named students present.

Taeho opens his bag by the vending machines and takes out a worn black journal repaired with transparent tape.

The corridor light flickers over lined paper. The handwriting is uneven and young.

Flashback to a middle-school classroom in muted colors. Younger Minji sits alone by the window; her face is fully visible to camera, smaller and guarded.

Flashback hallway outside classroom. Seojun appears clearly for first time, face visible with black ear cuff, flanked by indistinct classmates.

Flashback classroom and hallway fragments, showing social pressure without absolving anyone.

Return to vending-machine corridor. The journal lies open between them; the hum feels too loud.

Flashback to an empty stairwell after school. Younger Minji and younger Taeho stand apart in soft late light, no other students.

Flashback shifts to next morning hallway where Seojun's group notices Taeho looking at Minji.

Present corridor. The vending machine light colors their faces pink and blue. Neither knows where to put their hands.

The corridor narrows visually around Minji's hand closing on the black journal. Taeho lets go completely.

After-school corridor lengthens. Minji exits with the journal; Taeho remains beside the vending machine.

Night in Minji's bedroom, desk lamp on, fictional stationery brands only. The journal lies on her blanket like a forbidden object.