Hello, is this a letter addressed to Demon Fortress?

In a space where you can't see your hand in front of your face.

Lillian awoke from her coma to complete darkness.

She moved her wrists and found that she was firmly bound by something.

It was tied so tightly that her wrists ached.

She tried to struggle, but the rope didn't budge.

She tried to kick her legs again, but her ankles were still immobilized.

Fear spread up her spine like cold water.

She tried to shout, but no sound came out.

A wad of cloth was stuffed into her mouth, blocking it completely, so she could only make muffled whimpering sounds.

She shook her head desperately, tears welling up in her eyes.

Then, a sound of a chair leg being pulled came from the darkness.

A figure emerged from the shadows not far away.

Her long, golden hair was still striking in the dim light.

That face, which usually carried a lazy smile, was now as cold as ice.

Elvia leaned down, her gaze falling on Lillian's face, her voice cold and hard.

"Who sent you?"

"Why are you following us?"

"You'd better tell the truth."

"Otherwise, I won't show any mercy to your pretty face."

Her tone carried an undisguised ferocity, like a drawn sword.

Lillian's eyes widened, she shrank back desperately, and shook her head while whimpering.

Then her eyelids rolled back, her body went limp, and she fainted again.

Elvia paused in her movements.

She frowned as she watched the figure collapse again before her.

She reached out and patted Lillian's cheek, the touch neither too light nor too heavy.

No response.

I patted it twice more.

There was still no response.

After confirming several times, Elvia straightened up, her expression changing from fierce to a complex sense of helplessness.

She shrugged.

"...I'm dizzy again."

As she spoke, she leaned back in her chair and sat down, her eyes still looking very unpleasant.

Light streamed in through the crack in the door, outlining the room's shape.

This is a very strange room.

It appears to be woven from some branches.

Lillian was tied to the chair in the center, her body tilted to one side and her head hanging down.

On the other side of the room, Lin Gui leaned against the wall with his arms crossed, his expression much calmer than Elvia's.

He asked the question.

"Have you said anything you shouldn't have these past few days?"

There are far too many things that Lin Gui and Elvia shouldn't have said.

A single spark could take their lives.

So when he realized he was talking about confidential matters, Lillian was squatting down next to him listening.

That's why they're so full of murderous intent.

Elvia turned her head, her tone resolute.

"no."

"While you were away, I never spoke of Spark or our plans."

"When I was on the phone with you, I used the 'Night Veil' scroll you left behind as a cover."

She paused, her gaze returning to Lillian, and her tone became strange.

"But you—"

"You didn't notice her at the time either?"

She witnessed it with her own eyes.

How did Lin Gui manage to find all the surveillance methods in the post office when Luna left?

Her ability to investigate so thoroughly was astonishing, even to her.

This time, however, a perfectly healthy person was hiding right next to him, but he couldn't find them.

This chilling feeling, for some reason, felt strangely familiar to Elvia.

Lin Gui frowned slightly.

"I really didn't find it."

He was silent for a moment, then spoke.

"In terms of long-distance perception, I cannot compare to those of higher rank than me."

For example, Shia.

Lin Gui's magic was insufficient to support his ability to detect things several kilometers away.

But Shia was able to do it.

"But when it comes to close-range perception, even legends, even Wayne, might not be able to compare to me."

That was an absurd level of control created by piling up several spells without incantation.

If there were a detection orb that could reflect a magician's precision in controlling magic, then Lin Gui would undoubtedly be in the top ten.

Top ten in history.

That's what puzzled Lin Gui.

Lillian managed to evade his senses and remained standing right next to them.

He heard the very dangerous things they said that day.

If she hadn't spoken up, they might not have known that someone had already sneaked into the bedroom.

What surprised Lin Gui the most was Lillian's strength.

High-order median.

A mage weaker than him managed to deceive his senses.

Lin Gui stared at Lillian and said.

"There's only one possibility that could allow her to evade my senses."

"First—the artifact that the Brotherhood lost."

Elvia listened without saying a word.

She turned around, walked towards Lillian, and bent down to begin searching.

Her movements were practiced and meticulous, from Lillian's collar to her cuffs, from her hair bun to the soles of her shoes.

Lillian's body twitched slightly in her sleep, but she did not wake up.

After searching for a while, Elvia straightened up, her expression slightly subtle.

She had nothing on her.

"There are no magical artifacts, no runes, and nothing hidden."

She paused, then added in a somewhat informal tone.

"This little girl, on the other hand, looks like a child, but she has a nice figure."

"But if you want to catch up with me—"

She straightened her chest and slightly raised her chin.

"Maybe in the next life."

Lin Gui gave her a disgruntled look.

"Be serious."

Elvia coughed and cleared her throat.

"In short, this little girl has nothing on her."

"It can't be a divine artifact."

Lin Gui silently looked at the unconscious Lillian.

He actually had another guess.

But he could never bring himself to say this guess.

Because he was absolutely certain that he had never leaked the scroll containing the study of that magic.

Even if it gets leaked.

With the way Lin Gui mixed up the square script and Akara's common script, who could possibly understand it?

and many more.

Square.

Lin Gui's eyelid twitched.

If he remembered correctly, Elvia had mentioned that this girl was connected to an intelligence organization.

That bizarre name.

It seems to be called Four Squares.

Four... squares?

Lin Gui raised his head and looked at Elvia.

"Do you remember the names of those four square-shaped organizations... and what they looked like?"

Elvia was fanning herself with one hand and wiping the sweat from her forehead with the other.

Upon hearing this, she replied irritably.

"How could I possibly remember those patterns that are even more complex than ancient writing?"

"I don't have a photographic memory like a monk."

Lin Gui didn't say anything more.

He lowered his head, took out a pen and a piece of paper from his pocket, and quickly wrote four words on it.

He then handed the paper to Elvia.

Is this it?

Elvia took the paper and glanced at it in the dim light.

Her expression turned somewhat strange.

"right."

"Just these four."

"You've seen it before?"

Lin Gui did not answer.

He took the paper back and looked down at the four words on it.

On the paper, four neatly arranged square characters are displayed.

Those were the words of the world he once lived in.

The content of the text is...

【Nighttime Gauze Robe】

Lillian's words echoed in his mind, Lin Gui murmured.

"Miss Fox..."