The classroom was already half full when Han Seo-yoon stepped inside.
Morning light filtered through the tall windows, stretching across rows of desks in pale gold lines. The low hum of conversation filled the air, chairs scraping, laughter breaking out in small bursts, the familiar rhythm of another school day beginning. It was the kind of noise that should have felt normal.
It didn't.
Seo-yoon paused briefly near the door, her fingers tightening slightly around the strap of her bag as her eyes moved across the room. People were already settling into their groups, leaning into conversations that had clearly started long before she arrived.
She exhaled quietly and walked in.
Her steps were light, almost careful, as if she didn't want to disturb anything. She made her way toward the back, where the noise softened just enough to be bearable. The seat by the window, hers as it had been for months, was still empty.
But the one beside it wasn't.
Kang Ji-hoon was already there.
He sat with one arm resting loosely on the desk, his posture relaxed, as if he had been there long enough for the space to feel like his own. A notebook lay open in front of him, though he wasn't writing. His gaze was directed toward the window, unfocused, like he was thinking about something that didn't belong to the classroom at all.
Seo-yoon slowed as she approached.
For a brief moment, she just looked at him.
There was something about Ji-hoon that never quite changed. The same quiet presence, the same stillness that somehow made everything around him feel less overwhelming. It had been like that for years.
It still was.
She set her bag down gently on her desk.
Without looking at her, Ji-hoon spoke.
"You're late."
His voice was low, calm, carrying no real accusation, just a simple statement.
Seo-yoon pulled out her chair. "Two minutes isn't late."
He finally turned his head slightly, glancing at her. "It is if you almost miss the bell."
"I didn't miss it," she replied, sitting down.
There was a pause, brief but familiar.
Then, without another word, Ji-hoon reached into his bag and placed something on her desk.
A small carton of banana milk.
Seo-yoon blinked, looking down at it. "You didn't have to."
"You say that every time," he said.
"And you still bring it every time."
He didn't answer that. He just looked back toward the window.
Seo-yoon's fingers wrapped around the cool surface of the carton. It was such a small thing, something that could easily go unnoticed by anyone else. But to her, it wasn't.
It never was.
The bell rang a moment later, sharp and clear, cutting through the last of the chatter. Conversations quieted, chairs shifted into place, and the teacher entered soon after.
Class began.
The lesson passed in the way most lessons did, half listened to, half forgotten.
Seo-yoon kept her notebook open, her pen moving steadily across the page, though not everything she wrote was part of the lecture. Some lines drifted into thoughts, unfinished sentences that didn't quite belong to anything specific.
Every now and then, her attention slipped.
Not toward the front of the classroom.
But slightly to the side.
Ji-hoon was writing, his handwriting neat and controlled, his focus steady. He didn't fidget like the others, didn't check the clock every few minutes. He simply sat there, present in a way that felt constant.
At some point, he paused.
Without looking at her, he slid his notebook slightly in her direction.
Seo-yoon glanced at it.
A diagram, clearly labeled. Notes organized in a way that made everything easier to understand.
She hadn't even realized she'd missed that part.
Her lips pressed together faintly, something close to a smile forming for just a second.
"Thanks," she murmured.
Ji-hoon gave a small shrug. "You looked lost."
"I wasn't lost."
"You were staring at the same line for five minutes."
Seo-yoon looked back down at her own notebook. "I was thinking."
"That's what I said."
She didn't respond, but the corner of her lips lifted slightly.
By the time lunch arrived, the classroom had returned to its earlier noise.
Min-chae dropped into the seat in front of Seo-yoon with no warning, her presence immediate and impossible to ignore.
"You two came together again, didn't you?"
Seo-yoon looked up. "We always come together."
"Exactly," Min-chae said, as if that proved something.
Ji-hoon leaned back slightly in his chair. "It's on the way."
Min-chae turned to him. "Everything is 'on the way' with you."
He didn't argue.
Seo-yoon opened her lunch, the familiar routine grounding her. Ji-hoon did the same. Without needing to ask, he pushed half of what he had toward her.
She didn't hesitate to take it.
Min-chae watched the exchange, her expression shifting into something unreadable for a moment before she shook her head.
"I'm not even going to say anything," she muttered.
"Then don't," Ji-hoon said.
"Oh, I will. Just not today."
Seo-yoon frowned slightly. "What does that mean?"
Min-chae smiled. "Nothing you need to worry about. Yet."
School ended later than usual that day.
By the time Seo-yoon stepped out of the building, the sky had already begun to dim, clouds gathering in soft gray layers. The air felt heavier, like rain was waiting just out of reach.
She adjusted the strap of her bag and started walking.
She didn't need to check if Ji-hoon was there.
He always was.
A few steps behind at first, then beside her, matching her pace without a word.
They walked like that for a while, the quiet between them not uncomfortable, just familiar.
"You forgot your umbrella," Ji-hoon said after a few minutes.
Seo-yoon glanced up. "It wasn't supposed to rain."
"It's going to."
She considered that, then nodded slightly. "Then I'll just walk faster."
Ji-hoon didn't respond immediately.
Instead, he stopped.
Seo-yoon took a few more steps before realizing, turning back slightly. "What are you doing?"
He pulled something from his bag and held it out to her.
An umbrella.
"You take it."
She blinked. "What about you?"
"I'll be fine."
"It's not even raining yet."
"It will."
Seo-yoon hesitated.
"I can share," she said.
Ji-hoon shook his head lightly. "Just take it."
There was no insistence in his voice. No pressure.
Just the same quiet certainty.
Seo-yoon looked at him for a moment longer before reaching out and taking the umbrella.
"Thank you," she said.
Ji-hoon nodded once.
"Go," he added.
She did.
After a few steps, she glanced back.
He was still standing there.
Not leaving.
Just watching to make sure she would go.
Seo-yoon turned forward again, her grip tightening slightly around the umbrella.
The sky above her remained gray, the first drop of rain just beginning to fall.
Behind her, Kang Ji-hoon stayed where he was for a few seconds longer before finally turning away.
He didn't say it.
He never did.
But even then, he stayed.