Vanisher

Isaac's face was confused because all the spirits were supposed to stop time when attempting to make a contract. Perchance this one wasn't?

"I am the most unknown of spirits. No spirit nears my anonymity. Even my holders were able to reach the spiritual state and wiped the contract with me."

Isaac continued fighting. As if in annoyance, the spirit forced him to proceed with more daring attacks that would deal more power. 

Soon, the men were exhausted, which was evident in their movements. The spirit let out a grunt and then a sword of light appeared in Issac's hand and before he could question, he was forced to swing diagonally, trails of light following the sword as it split open one of the men's chest. 

The others showed surprise, and screamed loudly. He dashed in between the men and strands of light cut at the vitals of all the men.

Isaac breathed heavily and smiled.

"Why would they wipe the contract if you allowed them to reach the spiritual state?"

"Long story short, it's because I am selfish." the spirit said with a honest sigh.

Isaac thought. To him, all spirits were businessmen looking to secure investors. They would suffer for their investors very much, and the investors thought this was good, albeit they wouldn't do the same even if for a second.

He thought about the relationship one should maintain with their spirit and spirits in general.

He treated his spirit with as much respect as the spirit gave him.

He wasn't interested in the mythical 'Hero' spirit as it was said to care about what its users did with their power. It was also unfair as it secured many hosts but never allowed the host to get more spirits. Most spirits were unfaithful but they still allowed the host to get as much spirits as they possibly could.

"... I'm going to be honest. I'm asking for you to sign a contract. There is a unwritten law to not allow any spiritual information out until the host is preparing to enter it but what is written is to make sure that the host does not share information about it excluding what it has to do with Earth. I'm going to tell you that us spirits REQUIRE hosts by the time a week passes."

"I really don't want to die." the spirit continued, but it maintained a stoic and formal tone.

Isaac for the first time felt a bit of sympathy but he brushed it away as his respect for the spirit.

"I'll sign." he announced.

"One condition." he added.

"Which is?"

"I'm not a hero."

"Sign and I'll be able to see your past."

He signed his name, and the spirit laughed sinisterly, making Isaac smirk in response. He'd hit the jackpot of a spirit's mentality.

All he needs to know now is the limitations of this spirit.

...

After Isaac's death, peace returned to the Suchiales Kingdom, the Kingdom of marketing and sales possessing some of the richest people, filled with activity, whether bad or good...

"Ahghh!" 

"What's wrong? Are you weak?" 

The knight's armor had a imprint of a powerful kick on it, a few inches deep. Looking down at him was a lean figure a little less than two meters tall. Taunting the guard, the figure placed his hand on the knight's head.

Suddenly, gusts of air distracted the figure, and Isaac spun his body, and inserted a dagger into the person's neck.

The guard screamed loudly but was cut off by Isaac slitting his neck as he walked by.

"Call the Annihilators, no, call the Operatives!" screamed a man as he took a phone out. It wasn't as technologically advanced as current day phones but it was decent.

Isaac laughed loudly as he moved through the kingdom, killing nearly everyone. After seven minutes of massacre, the operatives arrived.

A lightning bolt hurled towards Issac, but he masterfully dodged it. He danced as he dodged the attacks easily.

"Everyone, clear out!"

A beam of condensed magical energy about four meters in radius shot towards Isaac as a team of a bulky man, a blue-haired woman, a brown haired boy, and a red-haired man.

"This wasn't entertaining." complained the red haired man who had directed the attack towards Isaac.

"Don't use past tense." replied Isaac. Standing there with blood all over him, he laughed.

The red-haired man looked at the crisp remainings of the 'substitutions' for Isaac. People who gazed at the fight, hoping that the Operatives would win.

He screamed with a primal rage, and strands of magical energy spread all over the district. Not even his allies were safe.

To finish off Isaac, he fired a ball of energy. With strands of magic all around him, he would be forced to bear the brutality of the attack or find a way out.

A powerful noise of the ball's explosion thundered through the place. 

Isaac was no longer present in his position.