On the seventh morning, Selene gathered the seven of them inside the ward circle and said something she had never said before.

"Today I’m going to teach you something you can’t learn from a textbook."

That got everyone’s attention. Even Kaelen looked up.

She stood in the center of the clean grass with her white hair catching the morning light, and for the first time since the assessment, she looked less like an evaluator and more like what she actually was: a Bloodline Plant Lord who had walked this path further than any of them, and who knew things about their talent that no normal teacher could show them.

— • —

"You’ve been filtering corruption energy for a week," she said. "Keeping it out. Blocking it. Treating it like poison. That’s correct — for a standard cultivator, corruption is poison. But you are not standard cultivators. You are Bloodline Plant Lords. Your root networks are not just energy channels. They are living systems designed to interact with the natural world."

She held out her hand, palm up, and let a thin thread of energy extend from her fingers into the air. The thread was pale green — her BPL energy, clean and bright. Then she stepped to the edge of the ward circle where the corruption pressed against the boundary, and let the tip of her energy thread touch it.

The group tensed. Cassian actually took a step back.

But the corruption didn’t overwhelm her thread. Instead, something happened that Ren had never seen before. Her energy wrapped around a small pocket of corrupted energy, drew it inward through her root channels, and processed it. The corruption went in dark and came out clean — filtered, broken down, neutralized. Like a plant’s root system filtering dirty water through soil.

"Root Purification," Selene said. "Instead of blocking corruption, you pull it through your root network and break it down. Your BPL roots are designed for this. Normal cultivators can’t do it because their channels aren’t living systems. Yours are."

— • —

She spent the next hour teaching them the technique. It was slow, detailed, and patient — a side of Selene that Ren hadn’t seen during the assessment. She walked them through the root-channel configuration needed, the energy cycling pattern that broke down corruption particles, and the safety limits for how much corrupted energy you could process before your roots needed rest.

It was genuine teaching. Not scoring. Not evaluating. Just a more experienced BPL showing seven younger ones how to use their talent properly.

Lyra picked it up fastest at first. Her control was the best in the group, and the technique was mostly about control — guiding corrupted energy through the right root channels in the right order. She managed a small purification within twenty minutes and looked genuinely surprised at herself.

Kaelen got it next, through sheer discipline. His version was heavy-handed — more force than finesse — but it worked. Iris followed, precise and careful. Cassian struggled with the delicacy but kept trying. Yuelan treated it like a combat problem and nearly overloaded her channels before Selene stopped her. Lin Yueying performed it with calm, quiet competence, as if she had read about it somewhere and was simply confirming what she already knew.

— • —

Ren waited. He let the others go first, watched their attempts, listened to Selene’s corrections. Then, when the group was practicing on their own and Selene was helping Yuelan not blow up her root system, he closed his eyes and ran the technique through OPTIMIZE.

OPTIMIZE.

Target: Root Purification technique (Selene Hart’s method).

Analysis: Instructor’s technique is standard Alliance BPL method, designed for Seedling-stage practitioners. Root-channel routing is effective but sub-optimal for Germination-stage foundation. Energy cycling pattern can be tightened for host’s expanded channel capacity.

Ren Valis Version applied: Channel routing re-sequenced for peak Germination root density. Cycling pattern tightened by 23%. Purification throughput increased. Safety margin maintained.

He opened his eyes and tried it.

The corrupted energy at the edge of the ward circle entered his root channels, flowed through the optimized sequence, and came out clean. Smooth. Fast. Like his roots had been built for exactly this purpose.

He ran it again. Same result. Clean purification, no strain, minimal energy cost. The System had taken Selene’s solid technique, adjusted it for his specific foundation, and turned it into something that worked twenty-three percent better.

The whole process — from watching Selene’s demonstration to performing a clean purification — had taken him about fifteen minutes.

— • —

Selene noticed.

She had been correcting Cassian’s cycling pattern when her attention shifted to Ren. He could feel the moment it happened — the particular quality of being watched by a Peak Stage 4 BPL who was specifically looking for things that didn’t add up.

She walked over. Stood beside him. Watched him run the purification one more time.

Her expression was carefully neutral, but Ren could see the calculation behind it. Lyra had taken twenty minutes to achieve a basic version with her exceptional control. Ren had achieved a refined version in fifteen minutes, and his purification was cleaner than anyone else’s in the group, including Lyra’s.

"You’ve done this before," Selene said. It wasn’t a question.

"No," Ren said. Which was true. He had never performed Root Purification before today.

"Then explain why your cycling pattern is different from what I taught."

Ren paused. She had caught the optimization. The re-sequenced routing, the tightened pattern — they were different from her demonstration, and she could feel the difference because she was a BPL who knew what this technique was supposed to look like from the inside.

"I adjusted it for my root density," he said. "Your version felt like it was designed for a larger channel network. Mine is smaller, so I tightened the routing to fit."

It was a reasonable explanation. Technically accurate, even. Just missing the part about the System doing the adjustment in about three seconds.

Selene looked at him for a long moment. Then she said, "That’s a sophisticated adjustment for someone who just learned the technique fifteen minutes ago."

Ren shrugged. "I’m a fast learner."

The silence that followed was the kind that said I don’t believe you, but I can’t prove it, and you know I can’t prove it, and we both know we’re going to keep playing this game.

— • —

But then Selene did something unexpected. Instead of walking away to write another note in her growing file, she stayed. She crouched beside him, held out her hand, and said, "Show me the adjusted version again. Slowly."

He did. She watched his root channels process the corruption energy through the modified sequence, felt the flow through her own BPL senses, and nodded.

"Your adjustment is actually better for a Germination-stage cultivator," she said. "The standard version is calibrated for Seedling and above. What you did makes more sense at your level." She paused. "I should have taught you the adjusted version from the start. I didn’t think of it because I learned the technique at Seedling stage myself."

It was the most honest thing Selene had ever said to him. Not a test. Not an evaluation. Just one BPL acknowledging that another BPL had found a better way to do something, even if the how was still a mystery.

For a moment, Ren caught a glimpse of the teacher Selene could be if she weren’t also his watcher. Someone who cared about getting things right. Someone who would adjust her own methods when a student found something better. The kind of mentor you actually wanted to learn from.

"Thanks," Ren said.

Selene stood up. The evaluator mask slid back into place, smooth and practiced. "Don’t thank me. Practice it until you can do it without thinking. The deeper zone will test your purification under real pressure."

She walked back to help Cassian, who was still struggling with the cycling pattern.

Ren watched her go and thought: ’She’s suspicious of me. She’s watching me. She reports to Caelan about me. And she just admitted I found a better version of her technique.’

’People are complicated.’

Kaia pulsed gently. Warm. As if to say: you’re figuring that out.

— • —

Author’s Note: Selene teaches. Ren learns too fast. But instead of just filing it away, Selene stays and listens. The mentor and the watcher are the same person — and that makes her more interesting than either one alone. Thanks for reading!