Fusion

Kuro was alone in a room when he felt a change inside the inventory.

With a thought, he checked everything and found the bodies of Sakon and Ukon.

He pulled Sakon's body out with another thought before pulling out a blood bag.

He couldn't find any Orochimaru laboratory, but he did get a few things elsewhere, including the blood bag.

Kuro's plan was a simple blood transfusion until there is enough of Sakon's blood in his body.

From what he remembers, Kabuto employed something similar to have Orochimaru's DNA.

Kuro pierced the plastic tube into Sakon's body and did the same with his body.

The blood traveled from Sakon's body to the bag and continued to Kuro's body.

...

It continued for a while before Kuro felt a tingling in his body that lasted for an instant, at the same time a series of translucent windows appeared in his vision.

[A considerable amount of unknown genetic material has entered the host's body!]

[Genetic material analyzed!]

[Detected properties: Allows the user to break down his body at the molecular level!]

[Chances of an integration with the current amount: 6%!]

[Source of origin of the genetic material detected!]

[Do you want to speed up the absorption process? Y/N]

Kuro was surprised when he read the notifications and after rereading them, he agreed.

Suddenly, the tingling he felt earlier returned, at the same time blood began to be drawn from Sakon's body at a much faster rate.

The transfusion to Kuro's body also increased, and a small swirl was created at the mouth of the plastic tubes.

When Sakon's body began to show signs of being affected by the loss of blood, the suction stopped and another notification appeared.

[Chances of an integration with the current amount: 100%]

[Begin the integration of the genetic material? Y/N]

Kuro agreed, and the tingling became much stronger and started to run through his whole body.

...

Another notification appeared when the sensation stopped.

[Integration successfully completed.]

'This was faster than I thought.' Kuro was pleasantly surprised at what had just happened.

Initially, he thought that the integration of Sakon's DNA in his body would take quite some time, just like what happened to Kabuto with Orochimaru's DNA.

However, apparently, the System can assist in the integration, although it only did so when there was a certain amount of blood in Kuro's body.

This further increases his hope that the System will assist in the fusion of the bodies.

Kuro removed the tube and stored the body and the blood bag in the inventory.

Now, he took out his original body and put his hand on its chest.

'Now, let's see how it works...' Kuro's thoughts focused on wanting his body to separate and enter through the chest of his original body.

Not even a second later, his perception changed, and he felt that he was in the chest of his original body.

With a thought he carried that sensation outward and his head emerged from the chest.

The head came back down, and he spread the sensation throughout his body.

When not an inch was left outside, Kuro switched bodies.

'Living Corpse Reincarnation.' The chest of Kuro's body glowed with blue light for a moment before his perception changed.

He felt that he was lying on the floor and a series of notifications was the first thing that greeted him. 

[New body of the Host detected!]

[Beginning Assimilation!]

[Composition of the body recognized. Analyzing...]

[Original body of the Host detected!]

[Assimilation complete!]

Kuro sat up, and more notifications filled his vision.

[Unknown entity detected inside the Host's body!]

[Analyzing...]

[Previous Host body detected in the cells!]

[The fusion option is available!]

[How do you want to proceed? Expulsion/Fusion.]

Kuro chose fusion and again felt a tingling throughout his body, however, this time it was accompanied with vitality.

[Fusion Started!]

He felt that his body felt increasingly healthy and energized. 

Previously, the assimilation with the White Zetsu's body was slow and steady, allowing him to passively get used to it. 

And because of the situation at the time, he ignored any sensations he may have had.

Now, the vitality-charged cells were merging with his body, allowing him to feel every little change.

.

.

The intoxicating sensation stopped after a while.

[Fusion successfully completed!]

[Mystic Eyes have evolved after fulfilling certain conditions!]

[New active skill added to the Mystic Eyes!]

Kuro rubbed his hair and checked the skill.

[Mystic Eyes (Passive) Lvl: MAX

Allows the User to analyze and copy the techniques he sees.

Allows the User to see in the dark.

Allows the User to perceive any movement of the opponent, regardless of speed or power.

-

Dividing Line (Active)

Allows the User to see the dividing line of any being or object, while giving him the ability to cut it. 

Cooldown: 

30 days if the line is cut successfully or if the User does not try to cut it.

365 days if the User fails to cut the line.]

(A/N: It is similar to the Mystic Eyes of Death Perception, but oriented to divide things.)

'I hope it's as awesome as it sounds...' Kuro thought before looking around. 

Although the Cooldown is a bit long, he decided to try the skill now that it's a safe environment and have a better understanding of how it works.

He stood up and grabbed his sword before walking towards the wall painted like a swirling sea, although it was already quite worn out.

He took a deep breath and activated the skill, intending to separate the painting from the wall.

The blue color in his eyes shone for a moment, and Kuro saw a dark blue line go horizontally across the wall.

He got into a better position and with a quick movement cut the same way the line was.

Just as his sword touched the dark blue line, the paint on the wall began to be dragged away by the sword.

*Splash!* And when he finished the cut, all the paint was pushed off the wall.

Kuro looked at the puddle of paint on the floor and then at the large white area on the wall.

If someone saw the wall now, they would think that someone fervently cleaned that part but neglected the rest of the room.

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(A/N: Happy New Year to all!!!!)

(A/N: I won't give details, but I'm about to start writing another Fanfic. The MC needs a skill and an item to start his journey; If you are interested, you can tell me one and from the origin series. I will use an online Fortune Wheel to decide what the MC will have.)

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(Patr eon .com/Nutella_ There will be no advanced chapters. I did this for anyone who wants to donate.)