She checked her headlamp battery twice before they went in.

This was new. She had a list now — a physical one, written on a small card she kept in the inner pocket of her kit, seven items that needed verification before any gate entry. The list had been created on the morning after the labyrinth dungeon, when she had been sitting at Chae-won's kitchen table drinking coffee and thinking about twelve minutes in the dark and had decided that the most productive response to that situation was to ensure it didn't arise from the same cause again.

The headlamp checked out. The reserves were full. The kit was stocked to the updated specification she'd developed over eleven weeks of learning what she actually needed versus what the standard configuration assumed she needed. She had gotten better at this — not good in the way of people who had been doing it for years, but good in the way of someone who had been paying very close attention to the gap between theory and practice.

The Class A gate in the eastern district was large, as Si-woo had predicted, and the interior was exactly the kind of three-floor configuration that produced the specific combination of sustained difficulty and resource management that she had learned to read as: this will be a long day.

She went in prepared for a long day.

---

The first two floors were difficult and manageable. She healed Ha-eun's left shoulder — the same shoulder, the recurring vulnerability, which she had started treating preventively in the approach rather than reactively in the aftermath. She healed Min-seok's forearm after a hit that had been faster than the enemy's established pattern suggested. She monitored Si-jun's reserves with the attention she'd developed for the specific way his energy signature thinned under sustained exertion and topped him up at the second floor junction before he needed to ask.

She tracked Si-woo the way she tracked everyone — continuously, peripherally, the ambient awareness that had become part of how she moved through dungeons. She noticed that he was running slightly hot on the third floor — pushing harder than his usual economy of motion, compensating for something she couldn't identify, the ability working at a higher output than she normally observed.

Note that, she told herself. Watch the reserves. If the ability is drawing more than usual, the baseline cost goes up.

She noted it and kept moving.

---

The boss room on the third floor was the kind of fight that the novels had called climactic and which she had learned, in practice, meant: everything goes wrong in sequence rather than all at once, and the team handles each thing in turn, and at the end of it everyone is tired and nobody is dead and that is the definition of success.

Ha-eun took the shoulder hit she'd been working to prevent — different angle, different mechanics, the dungeon having changed its approach the way diverged dungeons did. She healed it in motion, redirecting reserves she'd been holding back, and Ha-eun was back in position within fifteen seconds.

Min-seok's arm again — a different cut, lower, which she treated with the efficiency of someone who had healed that specific person's specific injury patterns enough times to know the variations.

Si-jun: she kept him topped up through the extended second phase, watching his output and matching her input to keep him at functional capacity.

She was managing her own reserves carefully — better than the northern district A-run, which she was using as her benchmark. She was at sixty-two percent when the boss entered its third phase, which was sustainable.

The final exchange was fast. The boss committed to a terminal attack, the team responded, Si-jun landed the close. Yoon-seo was tracking the aftermath — checking positions, assessing residual status effects, beginning the post-combat inventory — when she saw it.

The last strike had been broader than the boss's established pattern. She had seen it coming by a fraction of a second and had been tracking Ha-eun at the time, and the hit had caught Si-woo at the right side, below the ribs, at the moment he'd been turning to follow through on his own attack.

Not deep. She assessed the distance and the angle and the energy signature and concluded: not deep, not dangerous, the kind of injury that someone with his pain tolerance and operational discipline would not mention unless directly asked.

She finished her post-combat check of the rest of the team — Ha-eun, Min-seok, Park Jun-ho, Si-jun, all within acceptable parameters — and crossed the boss room to where Si-woo was completing his own post-combat routine with the methodical focus he brought to everything.

"Right side," she said.

He looked at her. Not the assessment, not the recalculation. Just: looked.

"It's manageable," he said.

"I know," she said. "I'm going to heal it anyway."

---

He sat down on a section of rubble that had settled into something approximating a flat surface. She didn't ask him to — he simply did it, in the way he did things when he had made a decision and was implementing it without narration. She registered this and did not remark on it and crouched beside him with the kit.

The injury was as she'd assessed — clean, below the ribs, not deep but real. She examined it with the focused attention she brought to all injuries and noted that the energy around it was slightly disrupted, the way injuries near someone with an active ability sometimes were, the two systems interfering with each other at the edges.

Interesting, she noted in the part of her mind that catalogued things about him. His ability isn't just external. It runs through the whole system.

She placed her hands and began.

The healing took longer than the injury's severity warranted — the disrupted energy made precision harder, required more attention per unit of tissue, the kind of work that was easier when you had full reserves and harder when you were at sixty-two percent and had already been working for several hours. She managed it by narrowing her focus rather than broadening it, directing everything to the specific site rather than broadcasting generally, the technique she'd been practicing in the training room for weeks.

He was very still.

Not the tactical stillness, not the processing stillness — the stillness of someone who was allowing something. She was close enough to see the detail of his breathing, which was even and controlled, and the detail of his expression, which was the careful neutral she had come to understand was what he wore when he was not actively constructing it but also not letting it go.

He was looking at the far wall. Not at her. Not at his own injury. The middle distance, the same place he looked when he was inside something rather than attending to the external.

She focused on the work and did not think about the distance between her hands and the warmth of the surface beneath them and the fact that this was the first time she had healed him like this — deliberately, without emergency, with his active permission.

She focused on the work.

The injury resolved. She felt the tissue close, the energy signature stabilize, the disruption settle back into the baseline pattern she had catalogued over months of peripheral awareness. She held the contact for an extra moment to confirm the result, then removed her hands and sat back.

"Done," she said.

He didn't move immediately. He sat on the rubble with his eyes on the far wall for one more breath — the deliberate breath of someone completing a transition — and then he stood, with the same unhurried motion, and looked at her.

The light in the boss room was the post-combat light, the dungeon settling after the disruption of the fight, slightly different from the combat light. In it, she could see his face clearly, and what was on it was not any of the expressions she had categories for. It was something simpler than any of them. Something that had the quality of things that existed before they were named.

"Thank you," he said.

Two words. Even, mild, the same voice he used for everything. But she had been listening to his voice for eleven weeks and she understood — in the way she understood most things about him now, which was: through accumulation, through attention, through the particular knowledge that came from paying close attention to someone for long enough that the gap between what they said and what they meant became navigable.

He was not saying it by reflex. He was not saying it because courtesy required it. He was saying it because he wanted to say it, which was, for him, a specific and deliberate thing.

She looked at him. At the face that had been, for eleven weeks, the most consistently difficult thing she had encountered in a world full of things she hadn't known how to navigate.

"You're welcome," she said.

And meant it, completely, in every sense that the words could hold.

He turned and walked toward the room's exit where the team was reassembling. She watched him go for a moment, then stood and picked up her kit and followed.

Two words, she thought. He said thank you and she said you're welcome and that was all that happened.

It was, she thought, nearly everything.