the monarch

Author's Note: Special thanks to

Maloztska24 who showed me a huge error in this chapter

"Second, they changed the name of the city to Esperança and, finally, the people of the city began to exchange their techniques with each other spontaneously. Today, they are in the top 10 of national championships."

Kayden was shocked for a few seconds. His father, who seemed like a nice old man, was a legendary hero. Not only that, but he even returned to cultivating after such an injury.

"This is insane…" Kayden muttered.

"Really," Heimer grumbled back.

Back at David's mansion, Kayden was waiting for the man in the kitchen. While eating, he organized his thoughts so as not to violate the contract by telling him the news. In a few moments, the door was opened by David.

"Kayden, hello. I didn't see you coming back," the scientist greeted him cheerfully. The boy was very eager to chat and got straight to the point.

"I found a way to make it work. I had to sign a contract, so I can't give you the details. What we needed was for the heart to be in someone for it to work. It has something to do with laws, I couldn't understand it very well."

The scientist needed a few seconds to understand what the boy said and, after it hit him, he dropped everything in his hands and smiled from end to end.

"Come on, tell me everything I need to know." Kayden summarized what he learned and what he could tell without breaking the contract.

"We will practice how to do the transplant for the next three weeks and try on the first day of the fourth week," Kayden said firmly. David already knew the boy and didn't even try to argue with the boy.

Three weeks later

Today would be the day they would perform the transplant. Everything was fine: the heart was capable of carrying out all the micro-actions necessary for its functioning; Kayden already knew how to expand veins to control the flow of mana after the heart was transplanted.

He trained thousands of times to be able to mold his mana into the correct shape and impose his will. He was able to do the process with his eyes closed.

They were both in David's laboratory. The scientist closed all entrances to the laboratory and used sound insulation in place. Even the light was designed so as not to disturb the process.

"Are you ready, Kayden?" David brought a bottle of pills forward. "Take a capsule. These are caffeine pills. They will stop you from feeling mentally tired."

The boy took a capsule and sat in the lotus position. After concentrating for a few minutes, he signaled David to start gathering mana. Kayden was calm, a turning point in his life, and he was ready to go all out.

Failure was not an option. Today, he would revolutionize the world or die in the attempt. After concentrating, he began drawing mana into himself. The first step was to open up your core and reshape the base of your heart on top of it.

Kayden finally understood the level of pain he was going to go through. It was unnatural for his body to wreak havoc on itself. Every movement made every nerve in his body scream in pain.

A cry of pain came from the boy and startled David. It seemed to be a cry from the depths of his soul. After a few minutes, Kayden finally enlarged his core enough to use as a base.

At that moment, it began sucking up the surrounding neutral mana and directing it into itself. He started by building the smaller cavities and then moved on to the ventricles. During the entire process, his body continued to burn.

After about 40 minutes, he finished the places where mana would be stored and his mind was already heavy. He didn't even remember a world without pain. His sense of time was broken. Did seconds pass? Hours? Days? Kayden didn't know.

Another 20 minutes passed and he was finally ready to start the smaller details of the organ's physical appearance. With the mitral valve and liners, every detail has been crafted with perfect precision.

After 2 hours of this process, Kayden was already lost. He wasn't able to feel his body, only one sense was present at all times: pain. Every second the burning continued.

Details were complete, from valves to interior and exterior cladding. David continued to place mana around Kayden, who was instantly pulled back. The boy had already used it enough to break through the apprentice level a few times.

Now he began to impose his will on the heart and make it follow various laborious processes, such as pumping mana at a certain speed and pressure. Another 2 hours passed in this process, but Kayden couldn't take it anymore. He had long since passed his limits.

His body had given up, but his mind was more alive than ever. All processes have been terminated. Now was the final part: integrating his heart into his body and mind.

There were no studies or data on this. It has never been performed before. He started by making the heartbeat and pumping mana from one atrium to the other. There were still no mana veins.

His body was rejecting the new organ. He already had one heart, why the hell would he need two? It was impossible to explain to his own body that one of them had nothing to do with his physiological needs. It was time-consuming. At all times he had to stop his body from exploding his heart from the inside out.

After an hour, he was at the final moment. Now it was time for the truth. He would destroy what was left of the core and cleanse it from his body. That was the most painful part. It was like pulling out a piece of the soul.

The degree of pain this resulted in was inexplicable. His body was screaming for him to stop, his mind was beginning to show signs of fatigue, and without Kayden noticing, there was a slim chance it could break.

One last point of residual mana was missing. He knew that as soon as he cleaned his up, his new heart would automatically begin its work and be taken over as a new core by his mind.

"Burn the ships," Kayden shouted to himself as he cleaned the last remnant of his core. As soon as the work was finished, the child passed out on the floor.

David was startled. He didn't know if the boy was finished or if he couldn't complete the process. Quickly, the scientist supported Kayden on the laboratory bench and called Daisy.

Instantly, the small wooden puppet appeared and began fussing with Kayden. David was anxious. Did it work out? What happened at the end? After a few seconds, he received a message through the spirit link.

"He lives, but he is completely exhausted. He pushed his body way beyond its limits. It should take a few days for him to wake up." David let out a sigh of relief and dropped to the floor.

He started laughing like crazy and crying with happiness.

"Finally, how many years have I spent studying, finally."

AN: Sorry for the short chapter, I have a test tomorrow

AN: Thanks for power stone ISEKAI_Fan

I know it sounds strange I thank the simple power stone, but even this encouragement already helps me a lot, Thank you very much