Start by Eating Jake Jake no Mi

Coulomb's Sword. 

This was Masa's signature magic, which became the trademark of every Isshiki family member.

This magic was so powerful that it caused many to think that the Isshiki family should be placed among one of the Ten Major Clans due to the overwhelming and absolute nature of this magic, as no one could defend against it. 

Even the famous Juumonji's Phalanx, the unlimited barrier that could continue to refresh, couldn't even defend against this magic. 

Why so? 

That was because the nature of the "Coulomb's Sword" itself was to attack the bonds of the atoms themselves, which were known as the chemical bonds.

Now, what is a chemical bond? 

A chemical bond is an electrical force that holds atoms together to form molecules and solids.

By separating that electrical force between the chemical bond, naturally, the two atoms would part away and completely collapse. More importantly, as it attacked the atom, nothing could defend against it. 

Using his bio-electricity, Masa created a sword that divided the electric force that connected two atoms.

Thus, a magic called the "Coulomb's Sword" was created. 

If Tatsuya's Decomposition could decompose anything, including the atoms, then Masa's Coulomb's Sword could divide the connection between atoms. 

"Coulomb's Sword..." 

When Maya saw Masa's blue sword, the two couldn't help but murmur the name of Masa's magic, the one that caused the Isshiki family to rise to prominence and gain a status that no one had ever thought of before. 

Using their bio-electricity, the Isshiki family could do feats that no one could imagine before, and all of that was due to this young man who had helped this family to rise to such a status. 

Yes, Maya could tell; just like Tatsuya, Masa was an exceptional, prodigy magician that no one had ever imagined would even be born. 

"But it's too early." Maya's face was as calm as ever, even if Tatsuya's head was beheaded and he had died. "There is a reason why I call him a monster, after all." 

As expected, as her voice fell, Tatsuya rose from the dead, and his beheaded head reconnected to his neck once again, completely unharmed from all the damage caused by Masa's magic. 

"Regrowth..."

Masa's expression was ugly, but he knew that this was why Tatsuya's ability was too unfair for his opponent since this guy couldn't die! 

More importantly, as Tatsuya used a "Regrowth," his magic force and stamina also returned to the optimum state as if he had never used it, which meant he had an unlimited amount of magic and stamina that wouldn't be emptied no matter how much he used it. 

On the other hand, while Masa's energy was immense, it didn't mean he had an unlimited amount, and it also took a toll on him to protect himself from "Decomposition," which he was sure that Tatsuya should have realized, considering what kind of creature this guy was. 

Yes, this was a battle of attrition.

The one who couldn't hold on would definitely be defeated. 

Yet, for Tatsuya, who could return to life like a character in the game, who had put a save point, loading himself to the save point the moment he died, without a number of a limit, how could this guy even be defeated?! 

Tatsuya had to admit that Masa was strong, but he wouldn't give up! 

He would definitely win, but—

Masa suddenly took out a gun-shaped CAD and pulled the trigger without even pointing it at Tatsuya. 

"Dominator." 

At that moment, Tatsuya's entire body crumbled as the chemical bonds between his atoms disappeared. 

Yes, this was the advanced version of the "Coulomb's Sword," "Dominator."

Unlike the "Coulomb's Sword," which could only be used like a sword, dividing the part that was slashed by the blade, the "Dominator" erased the chemical bonds on the atoms of Masa's target, making his target's body entirely collapsed, dead, without any ways to save it as they had completely turned into a pulp. 

This is also Masa's strongest magic! 

Yet, could this end Tatsuya?

"Dammit." 

Masa was speechless, watching Tatsuya, who returned to life once again. 

Yet, he wasn't the only one who was in horror since Maya could also see how Tatsuya kept reviving again and again, without much of a change on his face. 

Moreover, Masa could tell that Tatsuya's Regrowth had become even stronger, and somehow, he could imagine that even if he made Tatsuya's soul disappear, then Tatsuya would be revived once again. 

'This ability is like mine.' 

Yes, similar to his unique ability that allowed him to be revived when he died as long as one of them still lived, Tatsuya could do the same, but without the help of his other self. 

So, what should Masa do now? 

Even if Masa destroyed Tatsuya's body entirely, Tatsuya would come back like a zombie again and again. It was simply impossible to kill Tatsuya, and he didn't want to do anything big.

Even if he used his supreme physical ability, the result would remain the same since Tatsuya's Regrowth was really that buggy! 

"Give up. You can't kill me." 

Tatsuya was confident. 

No method could kill him, and he was sure that Masa had lost his wits to end him. 

"...is there really no way to kill him?" Maya murmured as she watched the battle between Masa and Tatsuya. She could understand why Masa was confident in his power, especially when she also had underestimated Masa.

"Are you sure?"

Yet, Masa was calm, which caused Tatsuya to frown.

The specialty of the Isshiki family had always been bio-electricity, and Tatsuya had to admit that he underestimated Masa's strength. 

Yet, even if Masa hadn't shown all of his arsenal, Tatsuya wouldn't have died since he could return forever with his Regrowth. 

However, all of a sudden, a scene that made their eyes widen happened. 

Masa suddenly appeared and became Miyuki. In the eyes of everyone, he was no longer that handsome and powerful young man but the beautiful girl who could smite anyone, yet the words that came out from this young woman were so cruel, like a devil. 

"Onii-sama, kill yourselves." 

"Yes." 

Tatsuya didn't hesitate and killed himself under the order of Miyuki. 

"....." Maya. 

Yes, Masa used his bio-electricity and Pika Pika no Mi's ability to alter how he appeared in the eyes of everyone. 

The concept behind this magic is the question, "Is what we see real?" 

Most people would see the color of a leaf as green, and they would deny someone who said that the color of a leaf was blue even though this person really saw the leaf as a blue color. 

So, why do some people see things differently from others? 

First were the senses, especially the eyes, and naturally, for Masa to be able to control the bio-electricity, he could control Tatsuya's brain to make him appear as Miyuki in Tatsuya's senses. 

Yet, Masa felt that this wasn't enough, so he also added his light manipulation to make himself appear as Miyuki with a hologram as insurance. 

So, with the combination of light and senses, Masa appeared as Miyuki in Tatsuya's brain and sent an order to Tatsuya to kill himself. 

Yes, Tatsuya's weakness had always been Miyuki, and it was impossible for him to fight against Miyuki, who was his everything in this world, as his mother had given him the order to turn Miyuki into his only world with magic.

In other words, this was Tatsuya's checkmate. 

Masa hadn't named this magic, but if he had to name this magic, then it would be—

"Fraus." 

Yet, this wasn't the end; glancing in the direction of the camera, Masa said, "You are next." 

Then, the hologram screen disappeared, and the room was all quiet, with only Maya could hear her own heartbeats as she knew well that Masa would come to her.