Heretic Trainer: The Gym Is My Cultivation Method

Garion dragged the covered table to the center of the room and pulled the cloth off with a casual flick.

A full cadaver lay there.

Aveline’s eyes widened. Raviel actually took a step back.

”GARION!”

Garion tilted his head. ”What? You said the book was hard to understand. So I brought the practical version.”

Aveline pointed stiffly. ”That’s a corpse, Garion.”

Raviel’s jaw twitched. ”You’re going to teach us... with that?”

Garion nodded like it was the most normal thing in the world.

”Of course. Textbooks alone are too slow. I’ll open this guy up and show you everything clearly.”

Aveline frowned, folding her arms. ”But this is still a human body... isn’t this wrong?”

Garion smirked.

”Relax. This guy’s a villain. He deserved worse than death. The fact that he’s helping us now is already an upgrade for him.”

Aveline slowly nodded. ”If that’s the case... then fine.”

Raviel pointed helplessly at the cadaver. ”That’s NOT the point, Garion!”

Garion blinked. ”Then what is?”

Raviel rubbed his face. ”You can’t just... pull out a corpse mid-lesson!”

Garion shrugged. ”Why not? It’s efficient.”

Aveline pinched the bridge of her nose. ”Garion... most teachers use diagrams.”

Garion tapped the cadaver’s chest.

”Diagrams won’t cut it. You two are the heads of God Clans now. If you want to train your clans properly, you need to know the body at a deeper level than everyone else.”

He flashed a grin.

”And nothing beats hands-on learning.”

Raviel stared at him in disbelief. ”You mean literally hands-on?!”

Garion handed each of them gloves.

”Yes. You’re gonna touch everything.”

Aveline stiffened, cheeks tightening. ”Everything...?”

”Everything.”

Raviel groaned into his hands. ”Why is this our life now...”

Garion clapped once.

”Alright! Lesson one, muscle structure and durability differences.”

He grabbed a scalpel, twisting it expertly in his fingers.

”Don’t blink. This part is important.”

Aveline straightened her back despite looking pale.

Raviel swallowed hard and nodded.

Garion smirked, eyes sharp with focus as he positioned the blade.

---

Raviel and Aveline looked half-dead, half-enlightened as they sat on the floor, backs against the training room wall.

Two full days of dissecting, memorizing body structures, tracing blood flow, and poking organs had drained them.

Garion stood in front of them with a proud smile.

”Good. You two learned fast. At least the important parts.”

Aveline let out a slow breath, wiping sweat from her forehead.

”It was... intense. But I understand now. Knowing the body really helps with controlling our strength.”

Raviel nodded tiredly. ”Yeah. I don’t think I’ll ever forget the inside of a human liver.”

Garion clapped once.

”Perfect. Now that you two understand enough...”

He pointed at them dramatically.

”It’s time to switch your cultivation paths to mine.”

Aveline stiffened. ”Change... to your path? I’m a mana cultivator, you know.”

Garion smirked. ”Of course it can be done. As long as you want it. That’s all it takes.”

He jabbed a thumb toward Raviel.

”Look at this guy. Already a third realm cultivator, yet he switched paths midway and fused the mana path with the body path.”

Raviel grinned weakly. ”Yeah. Painful, but worth it.”

Garion nodded. ”Exactly. And now, Raviel... It’s time to switch you fully to the real path... my God Physique Cultivation Path.”

Raviel blinked. ”...Fully?”

Garion nodded. ”Fully.”

Raviel hesitated. ”But according to your manual... you guys don’t even have mana cores. I do.”

Garion crossed his arms. ”Correct. Which is why you’re going to crush yours.”

Aveline’s jaw dropped. ”Crush... what?!”

Raviel shot up to his feet. ”WAIT. You want me to destroy my mana core?!”

Garion shrugged casually. ”Yeah. It’s in the way.”

Raviel pointed at his chest dramatically. ”That’s like... my whole cultivation! If I crush it, won’t I die?!”

Garion raised a brow. ”Did you ever hear of anyone dying from having their mana core broken?”

Raviel froze. ”...No.”

Garion smirked. ”Then you won’t die.”

Aveline frowned. ”Can’t he just... keep his mana core and still turn his cells into mana-core cells?”

Raviel nodded rapidly. ”Yes! Exactly! Why not both?!”

Garion sighed, rubbing his forehead.

”No. Absolutely not. The mana core and mana-core cells will clash.”

Raviel blinked. ”Clash how?”

Garion lifted a finger. ”Think of the mana core like a war general.”

He raised a second finger.

”And think of the mana-core cells as tiny war generals... weaker on their own, but there are trillions of them. When they merge, they form a much stronger ’general’ made from the whole army.”

Raviel nodded slowly. ”Okay, so I’ll have many mini-generals and one main general. Sounds good so far.”

Garion stared at him flatly.

”That’s the problem. You’ll have two generals leading the same army.”

Aveline frowned. ”Meaning...?”

Garion spread his hands.

”Meaning they’ll fight each other. Your big mana core is strong but alone, and your mana-core cells are many but still incomplete. They’ll crush your main core like a rebellion wiping out the old king.”

Raviel raised his hand again like a student in class.

”But wait. Can’t the small generals support the main general? Like generators powering up the main mana core?”

Garion squinted at him.

”...You’re really trying to keep that mana core, huh?”

Raviel nodded hard. ”YES. I’ve had it for decades, okay?! It’s sentimental!”

Garion let out a short laugh, then shook his head.

”Technically... it can work. Theoretically.”

Raviel’s eyes lit up.

Garion continued, deadpan.

”But the chance of it working is about the same as you becoming the prettiest girl in the clan by tomorrow.”

Raviel froze. ”Oi.”

Garion waved his hand.

”The mana core and mana-core cells are basically two different countries with different laws, different rulers, and different mana behavior. Trying to fuse them is like forcing two kings to share one throne.”

He placed a hand on Raviel’s shoulder.

”It’s not worth it. Crush the mana core. Use the mana inside it as fuel.”

Raviel swallowed hard. ”Fuel for what?”

Garion smiled.

”For creating your first perfect Mana Core Cell.”

He tapped Raviel’s chest lightly.

”That first cell will be the foundation of your God Physique.”

Aveline stared at Garion. ”A... foundation?”

Garion nodded.

”Exactly. A core cell so perfect it becomes your body’s new powerhouse. Once the first one is made, the rest will follow.”

Raviel took a shaky breath.

”So I crush the mana core... and use the energy to make this ’first perfect cell.’”

”Yup,” Garion said, smiling.

Aveline leaned closer, voice unsure. ”And if he messes up...?”

Garion grinned.

”Then he’ll explode.”

Raviel’s soul left his body for a moment.

Garion slapped his back. ”Relax. I’ll guide you. You won’t die. Probably.”

Raviel groaned loudly. ”This is torture...”