Chapter 17 – Hidden Between Textbooks

The following week passed more smoothly than the last.

After oversleeping once, Seo Do-hyun made certain it would never happen again. He returned to his familiar routine of sleeping before midnight whenever possible, waking before sunrise, and arriving at campus well before his first lecture. To everyone around him, it seemed as though the brief incident had been nothing more than an unusual accident.

Only Do-hyun knew the real reason.

The manuscript had become increasingly difficult to ignore.

Even when he wasn't reading it, ideas continued to appear throughout the day. A line of dialogue would suddenly come to mind during a lecture. A better motive for one of the suspects would reveal itself while he waited for the train. Sometimes an entirely new scene would form in his imagination while walking between buildings on campus.

At first, he tried to memorize every idea until he returned home.

That approach lasted exactly three days.

By the fourth day, he had forgotten an entire conversation between Detective Han Ji-seok and one of the suspects simply because another lecture had begun before he could write it down.

He regretted it far more than he expected.

"I need a better system."

That evening, after finishing another round of revisions, he carefully organized the manuscript into a slimmer folder that could easily fit inside his backpack.

Looking at it resting on his desk, another thought quietly occurred to him.

If anyone saw it...

Questions would inevitably follow.

Why was a medical student carrying around a murder mystery novel?

Why was he spending his free time writing fiction instead of studying?

He wasn't ready to answer those questions.

Not because he was ashamed of writing.

At least, that wasn't the entire reason.

The manuscript still felt fragile.

Too personal.

It represented a version of himself that had disappeared years ago.

He wasn't ready for anyone else to see it.

His eyes drifted toward the thick anatomy textbook lying beside the folder.

The book was nearly a thousand pages long, large enough to hide several stacks of paper without attracting attention.

A small smile crossed his face.

"...Perfect."

He carefully slipped the manuscript between two chapters near the middle of the textbook before closing it.

From the outside, it looked completely ordinary.

Just another medical textbook carried by an exhausted student.

No one would think twice about it.

The new hiding place proved surprisingly effective.

Every morning, the anatomy textbook accompanied him to campus alongside the rest of his lecture materials.

Whenever professors assigned independent study sessions or breaks appeared between lectures, Do-hyun quietly opened the heavy textbook.

To anyone passing by, it looked as though he was reviewing anatomy.

Instead, hidden between hundreds of medical illustrations and labeled diagrams, Detective Han Ji-seok patiently waited for his creator to continue telling his story.

During one lunch break, Do-hyun found an empty table beneath a large tree overlooking the university courtyard.

Students wandered back and forth across the pathways while conversations drifted through the warm afternoon air.

He opened the anatomy textbook and carefully pulled out the manuscript.

The latest chapter described a witness recalling details from a crime scene.

As he reread the conversation, he noticed something missing.

The witness described the victim collapsing almost immediately after being attacked.

That didn't quite make sense.

Based on the nature of the injuries, there should have been a brief period during which the victim remained conscious.

Do-hyun quietly took out his pencil.

He adjusted the timeline.

Changed several lines of dialogue.

Added a subtle detail that would later become an important clue.

Satisfied, he smiled to himself before carefully returning the manuscript to its hiding place.

No one walking past had paid him the slightest attention.

Exactly as he intended.

As the days passed, the manuscript quietly became part of his everyday life.

Sometimes he rewrote a paragraph while waiting for the next lecture.

Other times he spent ten minutes brainstorming clues before practical training began.

The changes were never dramatic.

A sentence here.

A conversation there.

A clue moved from one chapter to another.

Yet little by little, The Silent Witness continued improving.

Medicine remained his primary responsibility.

Writing simply existed in the spaces between.

For the first time in years, those small moments of free time belonged to something other than studying.

One afternoon, after a particularly demanding physiology lecture, several classmates gathered around one of the classroom tables while waiting for their next professor to arrive.

Min-jun dropped into the seat across from Do-hyun with his usual carefree grin.

"I thought that lecture would never end."

A few students nodded in agreement.

"My brain stopped working halfway through."

"I'm pretending I understood everything."

Laughter spread through the room.

Do-hyun smiled quietly while reaching into his backpack.

He placed the thick anatomy textbook on the table before opening it to the bookmarked section where the manuscript rested.

He intended to make one quick correction before the next lecture.

Just one sentence.

That was all.

Before he could remove the hidden pages, another classmate called Min-jun's name from across the room.

"Hey, do you still have yesterday's notes?"

"I think so."

Min-jun glanced around the table.

"You always keep your notes organized, Do-hyun."

Without waiting for an answer, he leaned forward and reached toward the open textbook.

"I'll just borrow yours for a second."

Everything happened almost instinctively.

The moment Min-jun's fingers moved toward the hidden manuscript, Do-hyun reacted without thinking.

His hand shot forward.

He grabbed the textbook and pulled it toward himself so abruptly that several loose papers slid across the table.

The room fell silent.

Min-jun blinked.

"...Whoa."

The students nearby looked between the two of them in confusion.

Do-hyun stared down at the textbook clutched tightly against his chest.

Only then did he realize what he had done.

"I..."

For a brief moment, he couldn't think of a single explanation.

"I'm sorry," he said quickly.

"I just..."

The silence lasted another second.

Then Min-jun suddenly laughed.

"You scared me."

Another classmate grinned.

"What are you hiding in there?"

Someone else leaned forward dramatically.

"Wait..."

His eyes widened with exaggerated excitement.

"Are those love letters?"

The entire table burst into laughter.

Even students sitting nearby turned toward them with amused expressions.

Do-hyun felt warmth rise to his face.

"N-No."

"So defensive."

"Definitely love letters."

"Or maybe embarrassing diary entries."

"I bet he's secretly writing poetry."

The teasing continued, each suggestion becoming more ridiculous than the last.

Min-jun raised both hands in surrender.

"Alright, alright."

"I won't look."

"Whatever it is, it's obviously top secret."

The conversation quickly shifted to something else, and before long everyone was laughing about an entirely different topic.

Do-hyun quietly let out the breath he hadn't realized he had been holding.

He carefully slid the manuscript deeper inside the anatomy textbook before closing it.

No one noticed.

No one suspected anything.

His classmates believed he was hiding something embarrassing.

Perhaps they imagined awkward poems, private journal entries, or an old crush he didn't want anyone to discover.

The truth was something entirely different.

Hidden between diagrams of muscles and bones was a forgotten dream he had only recently found again.

He wasn't protecting a stack of paper.

He was protecting the part of himself he had finally begun to rediscover.