In the room, Leon placed the camera on the table and sat next to Rosvisser.

“There’s a missing sentry from the 27 hidden posts along the eastern border, right?” Leon asked.

Rosvisser nodded, remaining silent as she waited for Leon to continue.

“And since there was no sound of fighting, it means this sentry was eliminated without a trace.”

Leon continued, “Typically, only the top-tier assassins could pull off something like that.”

“But even the best wouldn’t be able to bypass all your patrols so seamlessly. Whether the infiltrator stayed hidden to strike again or retreated after the hit, they would’ve left some trace behind.”

“However, in this case, it’s as if the sentry just ‘vanished’ without a single clue to follow.”

As he spoke, Leon activated the camera’s magical preview projection.

Rosvisser took the camera and looked at the images Leon had captured from the eastern border, including the area where the missing sentry had been stationed.

It was a thicket, where the sentry had been camouflaged underground, using the bushes for cover.

Now, although the thicket appeared undisturbed from the outside, the sentry inside had mysteriously disappeared.

“Keep going,” Leon prompted.

Rosvisser scrolled to the next image.

It showed the thicket after the camouflage had been removed, revealing a deep pit where the sentry had hidden.

“The infiltrator didn’t damage the bushes, nor did they engage in any combat. They simply made the sentry disappear.”

Leon spoke slowly. “Sounds eerie, doesn’t it?”

“It is strange...” Rosvisser admitted.

“And this post wasn’t even near the border—it was more central. That means the infiltrator evaded at least eight to ten other sentries before taking out the one hidden in this bush.”

Leon explained, “Such advanced stealth techniques, even for dragons skilled in concealment, would be nearly impossible. Or rather... completely impossible.”

Rosvisser had encountered sentry attacks before.

Most of the time, the targets were those near the boundary because they were the easiest to provoke or attack for tactical reasons. And the attacks had never been this strange.

Compared to past incidents, this infiltrator was more like a... ghost.

Rosvisser stared at the camera’s preview projection, her lips pressed together. “Any other clues?”

“Of course.”

Leon continued, “Remember when we went to the border, and I suggested you reinforce your patrols?”

Rosvisser nodded. “I remember.”

“I asked you to do that because I noticed something unusual—a very clean, distinct boundary line along your territory.”

“Boundary line?”

“Yep.”

Leon scrolled through the camera and handed it back to Rosvisser. “Here, look.”

She glanced at the image.

Sure enough, there was a perfectly straight line, like a clean cut, separating the landscape. It wasn’t long, but compared to the uneven terrain around it, it stood out sharply.

“Now, the world is full of strange things, and such a boundary could naturally occur. So, to figure out if it was a coincidence, I went to other vulnerable areas over the past few days.”

Leon flipped through more images in the preview. “As expected, I found similar markings in every spot. So it’s safe to conclude these lines aren’t just a coincidence.”

“But what do these lines have to do with the missing sentry?” Rosvisser asked.

“They’re connected.”

Leon zoomed back in on the image of the missing sentry’s location and pointed to the edge of the bush.

“Look here. There are no signs of a fight, but this part of the bush seems to have been neatly cut. It’s too smooth to be natural or from decay.”

“Also, inside the pit, you’ll see similar clean-cut marks.”

Leon set the camera down and looked at Rosvisser.

“I said earlier that even dragons skilled in camouflage couldn’t pull this off because this goes beyond normal assassination techniques. This isn’t just a simple attack—it’s like seeing ghosts.”

He said the last part playfully, but a faint smile crossed Rosvisser’s lips as she caught his underlying meaning.

“So, you’re suggesting that this infiltrator didn’t use conventional methods but rather something we’ve never encountered before?” Rosvisser asked, understanding his point despite his joking tone.

Leon nodded. “Aside from gathering these clues, I also did some research in your library. Your *Dragon History* book was quite helpful.”

Rosvisser raised a brow. “How so?”

“It has nothing but glowing descriptions of the dragons, probably to avoid offending any Dragon Kings.”

Leon said, “In one section, I found a passage about *Ravi*, the Star-Dragon King. It described his mastery over spatial magic, saying that space, to him, was not just a concept but an art form.”

“As Ravi’s skills improved, he began using space magic for everyday tasks, including... construction.”

“It’s said that all Star-Dragon buildings are flawless and precise because Ravi didn’t need tools for cutting, polishing, or blasting—his space magic could slice through any material with precision.”

“After reading that, I dug deeper into space magic and found that it’s capable of much more than just building things.”

“Silently eliminating targets, retreating without a trace, leaving behind perfect cut marks—these are all things spatial magic can do.”

“So, we can make a bold guess: it was Ravi, or someone skilled in spatial magic, who used this magic to attack your sentry.”

“And it’s also this person who created those perfect boundary lines along your borders and checkpoints.”

Leon summarized, “Rosvisser, the one who attacked the sentry wasn’t a ghost. It’s someone using a method we’ve never dealt with before—spatial magic.”

Rosvisser followed Leon’s train of thought. “Indeed, if we assume spatial magic was involved, then everything makes sense.”

She paused before asking, “But there’s one thing I still don’t understand. If the attacker is so proficient in spatial magic, why only take out one sentry and draw a few straight lines?”

Leon helped her analyze the situation further.

“In my opinion, there are two possibilities.”

“The first is that spatial magic has significant limitations, with a range that’s not very wide. The attacker’s limit may have been taking out that single sentry in the middle of the forest.”

“And the second?”

“The second... is that it’s a challenge.”

“A challenge?” Rosvisser’s expression grew serious.

Leon’s face turned grim. “The attacker is warning us that the next battle, one far more severe than the one with Constantine... is coming.”