The screaming had stopped by the time Yuan reached the corridor junction.
That wasn't necessarily good news.
He pressed himself against the wall and reached out with Mana Sense, parsing what he could. Three student signatures, faint, stationary, clustered tight. Alive, probably. Cornered, definitely. The larger signature looming over them was C-rank, dense and aggressive, the kind of mana that didn't pace or hesitate.
He activated Shadow Step and moved.
The dungeon had changed since the anomaly. It wasn't just the monsters, the environment itself had shifted in subtle, uncomfortable ways. The mana-reactive moss that lit the passage walls had dimmed to almost nothing, and in its place the stone had taken on a faint dark sheen, like oil on water. The air was thicker. The ceiling in some corridors had dropped, or the floor had risen, or both, the spatial distortion hadn't just upgraded the threat level, it had physically restructured sections of the dungeon to match.
F-rank students had been trained to navigate a well-lit, clearly mapped training zone. What was left of that zone now was a different place entirely, and most of them had no idea how to move through it.
Yuan was starting to understand that Shadow Step wasn't just speed. It was permission. The skill interacted with the dungeon's new geometry naturally, dark corners, low-light passages, the heavy shadow cast by a collapsed pillar. It recognized these spaces as resources. Three seconds of intangibility, ten-second cooldown, but the repositioning it allowed changed the math on almost every situation he'd encountered so far.
He rounded the corner and found the source of the screaming.
Three first-years, he recognized the green-trimmed exam badges, had backed themselves into a shallow alcove. In front of them, a C-rank Stone Toad sat blocking the only exit, squat and enormous, its hide calcified into jagged natural armor. It wasn't attacking. It was just there, patient in the way that ambush predators were patient, waiting for someone to make a move.
The students weren't going to make a move. One of them was crying quietly. Another had their eyes closed. The third was holding a beginner's short sword in both hands with the rigid posture of someone who had completely run out of ideas.
Yuan observed from the corridor entrance.
The Stone Toad's mana signature was consistent with the field guide description, heavily concentrated in the hide, almost nothing in the underbelly, reflex responses clustered around the eyes and the lateral sensory organs along its jaw. His Mana Sense was reading it more cleanly now than it had read the Shadow Stalker. Either the skill was improving or he was getting better at using it under pressure. Maybe both.
He didn't think about it long.
He activated Shadow Step, crossed the distance in under two seconds, reappeared behind the Stone Toad, and drove his knee into the back joint of its left hind leg with everything he had.
The Stone Toad lurched sideways. Not hurt, C-rank hide wasn't going to care about that, but surprised, which was enough. It spun to find the threat, and in the half-second it took to locate him, Yuan was already moving again, Shadow Step pulling him back into the corridor entrance. The toad charged after him, momentum carrying it away from the alcove, and he kept retreating, leading it deeper into the side passage, putting distance between it and the students until he turned a corner and the signature lost interest.
He waited, counted to thirty. And came back around.
The alcove was empty. They'd run.
He didn't see which direction. That was fine, that was the point.
---
He spent the next twenty minutes moving through the dungeon like a rumor.
A Dire Wolf that had cornered two students near a collapsed bridge received a stone to the back of the skull at range and turned to find an empty corridor. A group of E-ranks trying to barricade a door heard something large and loud moving in the passage their pursuers had come from, and used the distraction to fall back to a more defensible position. They didn't see who threw the stone or what had made the noise.
Yuan kept moving.
He killed a lone Goblin Warrior near the eastern passage, a C-rank variant that had separated from a group and was moving with the deliberate purpose of something that had picked a target. He came out of Shadow Step behind it and hit it twice, once to the back of the knee, once to the base of the skull, and it went down harder than he expected, which told him the stat increases from the first extraction were doing more work than the numbers on paper had suggested.
[Ding!]
[C-Rank Goblin Warrior defeated. Experience +50]
He crouched over it, right hand extended.
The core was there, smaller than the Shadow Stalker's had been, and the extraction took less than three seconds. The Goblin Warrior came apart the same way, inward spiral, no residue, gone. Another notification appeared.
[Ding!]
[Ability Extracted: Goblin Warrior — Battle Instinct (D-Rank)]
[Skill Acquired: Battle Instinct]
[Rank: D | Type: Passive | Effect: Minor increase to combat reaction speed and threat detection.]
D-rank. Weaker than Shadow Step by a tier, but it was passive with no cost, always running. He filed it away and kept moving.
---
He heard her before he saw her.
Not footsteps, she didn't make enough noise for that. He heard the monsters. The particular sound of C-rank creatures encountering something they couldn't process, the short ugly sounds of fights that ended before they properly began.
Yuan rounded the junction at the dungeon's central crossroads and stopped.
Li Meilin was working through a group of four Dire Wolves with the calm efficiency of someone completing a task they'd done many times before. S-rank, second year, the kind of student whose name got used as a reference point in conversations.
how good are you? good like Li Meilin good, or just good? Her ability was something elemental, he'd heard, though the specifics had always been above his social orbit.
Watching it in person was different from hearing about it.
The C-Rank wolves were fast. The same tier that had separated Yuan from his group and restructured his entire understanding of his own mortality. Li Meilin moved through them like the speed differential barely registered, each motion deliberate and clean, mana cycling through her strikes in controlled bursts that put the wolves down without excess.
She wasn't showing off. She wasn't even breathing hard. That was somehow the most striking part, the complete absence of effort where Yuan had barely survived the same class of monster twenty minutes ago.
He watched from the shadow of a collapsed pillar and felt something he didn't immediately recognize.
He'd spent three years being jealous of talented hunters and knew what that felt like. This was something more neutral, a kind of clear-eyed reckoning.
'That is what S-rank looks like. That is the gap.'
Except.
He looked at his right hand. Thought about the Shadow Stalker, the Goblin Warrior, and the two skills sitting in his status window that hadn't existed an hour ago.
'The gap is a starting point.'
Li Meilin finished, checked her surroundings with the practiced sweep of someone accustomed to being the most dangerous thing in a room, and moved on. She hadn't looked in his direction once. His presence hadn't registered as worth noting.
That was fine, better than fine, actually.
He thought about the way she'd moved, the technique, the mana cycling, the precision. He thought about what it would mean to extract an ability from something at that tier, or higher. He thought about the Hidden: SSS on his status window and the word hidden, and what it meant that the system had chosen that framing specifically.
'Keep it that way,' he decided.
'For now, keep it exactly that way.'
He was still thinking about it when the conversation reached him from around the corner, three or four student voices, hushed and uneven with panic, the tone of people reporting something terrible.
"—came through the lower gate, someone said it's a B-rank—"
"—heading toward the main hall, there's still fifty students sheltering in there—"
"—nobody's stopping it, the E-ranks tried and—"
A pause.
"—there's nobody left to try."
Yuan closed his eyes briefly.
Then he turned toward the main hall.