The spriggan dangled upside down above the basin, wrapped in Kai’s thin materialized chain like a disgusting ornament. It was small, lighter than it looked, but it still fought. Its bark-claws kept scraping at the links, chirping and hissing. Its wrinkled old face twisted with pure spite.

  They’d found a wide chamber that looked like a greenhouse built by a god who loved ruins. Puddles. Wet moss. Little streams running between cracks. The worst possible place for lightning. Rin rolled her shoulders and tried to look confident.

  “Okay,” she said. “So, training dummy.”

  The spriggan hissed.

  Kai raised an eyebrow. “It understands you.”

  “It understands hate,” Rin corrected.

  Kai pointed at a patch of stone that was slightly higher than the rest, less wet, almost dry. “Over there. We want as little water around your feet as possible.”

  Rin followed his finger, then grimaced at the rest of the room. “In this place? Good luck.”

  “Less,” Kai said. “Not zero.”

  She looked down at the puddles around the platform and clicked her tongue.

  Kai’s mouth twitched. “You picked lightning.”

  “I picked lightning,” Rin agreed. “Not swamp combat.”

  Kai walked closer, keeping his boots away from the deepest puddles. He watched Rin’s grip, her stance, the angle of the chain.

  “Before you start,” he said, “tell me what you actually know.”

  Rin blinked. “About what?”

  “Magic,” Kai said. “Not your element. Magic.”

  Rin’s expression tightened into something almost defensive. “I know plenty.”

  Kai waited.

  Rin sighed hard, then admitted, “Okay. I know lightning. I don’t know the rest like you.”

  “Like me?”

  Rin gestured at him with her chin. “You talk like a walking book.”

  “Fine. Quick basics. Three costs. Sometimes four.”

  Rin lifted one eyebrow. “Okay, professor.”

  Kai held up a finger. “Distance. The farther you cast from yourself, the more mana it eats. And it’s not linear.”

  “Exponential?”

  Kai pointed at her. “Yeah. You knew that?”

  “I’m not dumb,” Rin said. Then, a beat later, quieter: “People just assume I am.”

  Kai didn’t react to that. He kept it technical.

  “Second,” he said, “creation. How expensive it is to make the element in the first place.”

  Rin’s eyes sharpened. “Fire is cheap.”

  “It wants to exist.”

  “Exactly,” Kai said.

  “Earth depends,” he continued. “Lightning isn’t the worst to create but it needs power to be efficient.”

  “Third cost,” Kai said, “maintenance. Keeping an effect alive.”

  Rin’s smile faded. “And lightning is the worst…”

  “By far.”

  Rin pointed at the spriggan, as if it was listening. “Because it doesn’t sit still. It wants to jump.”

  “And last,” Kai said, “concentration. Some elements are stable. Some aren’t. Lightning is basically—”

  “A tantrum,” Rin cut in.

  Kai paused, then nodded. “Yeah. A tantrum.”

  Rin adjusted her grip, proud again. “So you’re saying I can’t do it?”

  “I didn’t say that.”

  “You’re thinking it,” Rin said. “I can see it on your face.”

  Kai sighed. “I’m thinking that attacking at range, enchanting your chain while the target is moving, with water everywhere…”

  Rin snapped her fingers once. “Nope.”

  Kai stopped.

  Rin lifted her hands like she was presenting the chain itself. “That’s why I have a chain.”

  Kai stared. Rin’s eyes were bright now, almost excited.

  “I don’t need to enchant at range,” she said. “And I don’t need to maintain anything.”

  Kai frowned. “You still—”

  Rin cut him off again, faster. “No, listen. If I enchant right here.”

  She tapped the chain near her hands.

  “At the exact moment I hit,” she continued, “the current goes through the chain. Into the target. The chain does the distance for me.”

  Kai’s eyebrows rose.

  Rin’s smile widened, proud in a way that looked almost childish. “All I need is timing.”

  She looked down at the wet floor, then back up.

  “And this time, control,” she added. “So I don’t create arcs everywhere with this fake rain and puddles.”

  Kai nodded slowly. “Okay.”

  Rin’s pride sharpened. “Okay?”

  Kai looked at her. “Okay. That’s actually smart.”

  Rin exhaled through her nose, pleased. “I know.”

  Kai tilted his head. “No, like. Really.”

  Rin lifted her chin. “I told you, I know.”

  The spriggan chirped violently, like it was tired of being ignored.

  If you discover this narrative on Amazon, be aware that it has been stolen. Please report the violation.

  Rin glanced at it. “Shut up, old man.”

  Kai pointed at the spriggan’s body. “We start small. You’re not trying to fry it. You’re trying to make it feel it.”

  Rin’s grip tightened. “Oh, I can make it feel it.”

  “Rin.”

  She sighed, annoyed. “Fine. Small.”

  Kai stepped back. “First goal. No arcs. If you see sparks jumping off the chain, you stop.”

  Rin rolled her eyes. “Yes, Dad.”

  Kai’s mouth twitched. “Second goal. Contact only. If the chain isn’t touching the target, nothing happens.”

  Rin was more serious now.

  Kai pointed at the wet floor. “And keep your feet planted. Don’t slide. If you slip into a puddle mid-cast—”

  “I know,” Rin said quickly. “I’m not trying to cook myself.”

  “Good.”

  She inhaled. Then she moved. The chain snapped forward like a whip. It touched the spriggan’s shoulder. A faint crackle flashed. Tiny sparks jumped off the links and snapped toward the nearest droplets.

  “Stop.”

  Rin froze instantly, jaw clenched. The sparks died. She stared at the chain like it had betrayed her.

  “No,” she said fast. “That doesn’t count.”

  Kai was surprised, but didn’t show it. Even if it leaked, it was obvious. Her hands already knew the chain’s language, and she was landing frighteningly close to perfect timing on her very first tries.

  “It counts,” Kai said.

  “It was one droplet.”

  “And it would’ve been your ankle if you were standing in the water,” Kai said.

  Rin grimaced. “Fine.”

  She stepped to the side, changed her angle, lowered her wrist.

  Kai pointed. “Your grip. You’re letting it leak out the top.”

  Rin stared at her own hand like it had betrayed her.

  “How does it even leak?” she said.

  “It’s lightning,” Kai replied. “It leaks because it can.”

  Rin made a frustrated sound. “This is why everyone kept telling me not to take it.”

  Rin made one unsuccessful attempt after another. Meanwhile, Kai took the time to analyze what he had already noticed earlier. Rin’s chain seemed to stretch at will. At first, he thought it was a magical inventory Skill, where she stored the rest of her chain. But ultimately, it seemed more like an augment, which actually allowed her to enlarge her chain. The behavior was more like its materialization.

  By the time she finally went for a real hit, the floor was already marked with dozens of wet whip-lines, and her breathing had settled into the steady rhythm of someone who’d been repeating the same motion for far too long.

  This time she waited longer. She didn’t force the element. She shaped it. A clean pulse ran through the spriggan. No arc. No hiss. The falling droplets kept falling like nothing happened. Rin pulled back and smiled. There it was. That combat confidence. The one that showed up when she finally believed she could win.

  “That’s the timing,” Kai said.

  Rin pointed her blade at the spriggan’s face. “You hear that. I’m learning.”

  The spriggan chirped.

  Rin leaned closer. “Yeah. Keep talking.”

  Kai shifted his weight and flexed his fingers. The materialized chain tugged again. The spriggan twisted, trying to pull away. Kai tightened the mana a little and felt the strain hit his chest. He frowned. Something else tugged too. Not the chain. His face.

  A pressure behind his eyes, like he was squinting without realizing it. His scalp itched, deep under the skin. The illusion sat on him like a wet cloak. Kai swallowed and forced his expression neutral. Rin didn’t notice. She was locked in.

  “Again,” Rin said.

  Kai nodded, voice steady. “Again.”

  Rin leaned in and tapped the spriggan one more time. A perfect pulse. Rin stepped back and crossed her arms like she’d just won a tournament.

  Kai tried to exhale quietly. Illusion is heavier than I thought. He could feel the mana drain now that the adrenaline was gone. It wasn’t huge, but it was constant. A tax.

  Rin waved a hand in front of his face. “Hello. Coach. You died?”

  Kai blinked and snapped back. “Sorry.”

  Rin squinted. “You good?”

  “Yeah,” Kai lied.

  Rin didn’t buy it, but she didn’t press. She looked back at the spriggan, then at the wet room.

  “Okay, serious question,” she said. “Why do you know so much?”

  Kai blinked. “About lightning?”

  “About everything,” Rin corrected. “You talk like you’ve got a manual in your skull.”

  Kai hesitated half a second, then shrugged. “My brother. Ken.”

  Rin’s eyes narrowed. “Ken?”

  “Yeah,” Kai said. “He’s been training like a maniac since he chose enchantment at ten.”

  Rin pointed at him with two fingers. “And that explains you how?”

  Kai exhaled, almost amused. “Last year, when he turned twenty, he took the lightning with the extra augment.”

  Rin froze. “Wait. He added lightning?”

  “And wind too.”

  Rin made a face like she’d just swallowed something sour. “Of course he did.”

  Kai’s mouth twitched. “He needed flexibility. Safer casts. All that.”

  Rin stared at him a second longer, then said, quieter, “So you just… watched.”

  “I helped,” Kai corrected. “A lot. He’d practice, mess up, get mad, try again. I’d hold targets, time him, tell him when he leaked, when he overdid it.”

  Rin’s gaze flicked to the chain in her hands, then back to Kai.

  “So you’ve basically been coaching an idiot with lightning for a year,” she said.

  Kai nodded once. “Pretty much.”

  Rin snorted. “Lucky me.”

  She smirked, then lifted her chain again. “Okay, now we do it with movement.”

  Kai pointed at the spriggan. “It can’t move.”

  Rin nodded like that was obvious. “So I move.”

  Rin started circling the basin, chain swinging lightly, blade end close to the spriggan’s body but not touching. She practiced the rhythm. The reach. The snap.

  Kai watched her shoulders, her wrists, her timing.

  “Don’t think too much,” he said. “Lightning hates hesitation.”

  She moved in and tapped. Pulse. Clean. She moved again, faster. Tap. Pulse. Clean. Rin’s grin grew every time. Then she got cocky. She snapped the chain a little harder. The blade kissed bark and lightning jumped early, half a centimeter before contact. A thin arc shot into a falling droplet. The droplet hissed into the basin. Rin froze.

  Kai said calmly, “Reset.”

  Rin’s cheeks flushed. “I was testing.”

  “Reset.”

  Rin muttered something rude and started again, slower. Breath. Grip. Shape. Tap. Clean pulse.

  Kai nodded. “There.”

  Rin lifted her chin. “I know.”

  Kai sighed. “You really like saying that.”

  Rin smirked. “I know.”

  Kai almost laughed, then caught himself because the illusion tugged again, heavy. He rubbed his jaw subtly.

  Rin noticed anyway. “What’s wrong with your face?”

  “Nothing.”

  He was about to say something else when a sound came from the corridor. A scrape. Then a chirp. Rin’s head snapped toward it instantly. Kai felt his body tense too. Two spriggans. They darted into the room like they’d been watching the whole time. Smaller than the first two they fought, but fast. Mean. They saw Kai’s distracted posture and chose him instantly.

  They jumped from a root, claws out. Kai moved, but he was late. Too much in his head. Too much mana in the wrong places. Rin didn’t hesitate. She didn’t even shout a warning. Her chain snapped forward, blade end first, straight through the gap between them. The spriggans were aligned with the chain for a single perfect moment, mid-air and mid-lunge. Kai’s breath caught. Rin’s eyes were sharp. Not angry. Not scared. Decided.

  “Since it’s a Renewal,” Rin said, voice steady, “might as well go all-in.”

  She triggered the electricity early. Not a little training pulse. A real one. Lightning spilled from the blade a few millimeters before impact, jumping into the first spriggan’s body like the air itself had become a bridge. The spriggan’s bark skin flashed, body seizing for a split instant. And that split instant was enough. The blade punched through clean, the chain following, pulling the line straight through the first spriggan and into the second as it leapt. The chain wrapped across both bodies in one brutal, perfect arc. Rin yanked. The two spriggans collided with the wet stone and bounced, stunned.

  Before they could recover, Rin snapped her wrist again and sent a second discharge. Smaller. Controlled. It wasn’t flashy. It didn’t branch. It didn’t hiss into the puddles. It went where she wanted. Both spriggans went limp.

  Silence.

  Kai stood there, chest tight, heart hammering. He realized his hands were half raised like he’d been about to do something useful, and then didn’t. Rin’s chain retracting made a soft metallic sound, wet links sliding. Rin breathed once, slow, then looked at Kai like she was daring him to comment.

  Kai blinked. “You didn’t hesitate.”

  Rin’s grin was sharp, but her hands shook a little. “I didn’t think about hesitating.”

  Kai swallowed. “That was… risky.”

  Rin shrugged too hard, like she wanted to shake off the truth. “Yeah.”

  Kai stared at the two bodies, then at the basin, then at the puddles. No arcs. No collateral. Just precision.

  Kai looked back at Rin. “You’re getting it.”

  Rin’s eyes flickered with something like pride. “I know.”

  Kai let out a breath that sounded almost like laughter. “Of course you do.”

  Rin nudged one spriggan with her boot. “So. Lesson learned.”

  Kai raised an eyebrow. “Which one?”

  Rin smirked. “All in.”

  Kai was about to answer when a new sound rolled through the dungeon. Far away. Metal against stone. A heavy impact. Then another. A shout. Human. Kai turned his head toward the corridor, listening. The sounds came again. A burst of something that sounded like a spell cracking open. Water splashing. More movement. Someone was fighting deeper in the dungeon.

  Rin’s voice dropped. “We’re not alone.”

  Kai’s skin went cold. “Yeah.”

  Rin tightened her grip on her chain. “Then we stop playing,” she said.

  Kai nodded slowly, feeling the illusion tug, feeling the mana drain, feeling the dungeon pressing around them like a living thing. Rin pointed her chain toward the dark corridor like it was a compass.

  “We finish this dungeon,” she said.

  Kai’s mouth tightened into something that wasn’t a smile but tried to be.

  “Yeah,” he replied. “Let’s end it.”

  They stepped forward together. And somewhere ahead, the dungeon answered with another distant crash.