Custom Made Demon King

Roy was also aware of this problem. His demon bloodline was already very complicated. If he continued adding more bloodlines to himself, would it cause conflicts between them?

The T-Virus was all right since its main function was to strengthen his cells. However, if he really wanted to have an immortal body, then he had to modify his bloodline.

Roy felt that he had to figure it out.

It was naturally the fastest to ask the system about such matters. The system's answer to Roy was that it could indeed cause adverse consequences!

This was because Roy's attribute was clearly marked as dark on his homepage. It was an attribute common to all demons, meaning that Roy's bloodline transformation at least should not conflict with it! It also meant that it was impossible for Roy to transform into an angel just by creating an angel potion…

Of course, he could probably do something with the bloodline of a fallen angel. However, that was unnecessary since there was essentially no difference between a fallen angel and a demon.

The system's answer gave Roy a rude wake-up call. It seemed like it was best to be cautious when it came to bloodline transformations.

In this case, Roy temporarily ruled out the third plan for an immortal body. Although he really wanted an immortal body, he felt that he could probably find other ways to do it. Directly transforming his body through altering his bloodline was something that he should put aside for now.

There were only options one and two left then. The plan of making a Surplice to enhance his defense was feasible. Roy had also thought of the possibility that other demons would covet it since it was obvious from a glance that this armor was a treasure. This was a hidden danger.

However, it was actually very easy to solve. Roy could completely set it as part of himself and hide it within his body. He could 'transform' only when he needed to, just like Frieza.

Moreover, such a transformation unique to demon kings was rather exciting to have.

However, it meant that it was necessary to change the material of the Surplice. Since it was to be integrated with his flesh, then it was best to use the same material as his bones. In this way, Roy would also need to strengthen his bones, which felt rather cumbersome.

Also, in the battles to come, would such an eye-catching Surplice not be telling all the enemies to 'come at me!'?

This Surplice was an aggro skill! Without enough strength, being eye-catching was a route to an early death!

So after much pondering, Roy gave up this plan. However, he temporarily saved this plan as material. When he became stronger later, he might be able to restart this plan.

Therefore, Roy only had one choice left—using the Devil Fruit to strengthen himself.

Hear, hear, Devil Fruits were not made especially for demons…

Roy knew many types of Devil Fruits. The Invisible Fruit and Magma-Magma Fruit were the first two that he thought of, but in fact, Roy had many other choices.

After confirming that he would go with this plan, Roy began to list a few Devil Fruits suitable for him.

Invisible Fruit, Magma-Magma Fruit, Shadow-Shadow Fruit, String-String Fruit, Dark-Dark Fruit were among them before he deliberated on which to choose.

The effect of the Invisible Fruit, as mentioned earlier, was too simple. Even if he could turn invisible on the battlefield, he might still be hit by magic attacks if he was within range, so Roy directly eliminated it. After Roy gave it some serious thought, the second one eliminated was the Magma-Magma Fruit. Although the Magma-Magic Fruit had first-rate power, it would also make him extremely noticeable once he became a ball of flames, possibly leading enemies to think that he was a high-level demon and charge at him.

The Shadow-Shadow Fruit was a rather good choice. It could control others through shadows and had certain abilities to attack. He could also hide in the shadows of others at critical times, allowing him to avoid being the target of many.

The String-String Fruit was similar since he could create stand-in puppets to protect himself from harm and fool everyone.

However, after a comprehensive comparison, Roy's final choice was the Dark-Dark Fruit!

The main issue was resistance. When he was first summoned by this world, Roy had a strong impression of the 'Weakness' cast by Xeron. He originally thought that with his physical strength and Bloodlust skill, he would rarely find an opponent among low-rank demons, but Xeron's spell negated his advantage in power completely. This made Roy question himself, what if he were to meet similar magic?

The Shadow-Shadow Fruit and String-String Fruit both had means of evasion, but who could guarantee that he would not be hit by stray bullets in chaotic situations?

Therefore, in comparison, although the Dark-Dark Fruit had many shortcomings, it was rather useful for absorbing damage. Moreover, Roy was using the body of a demon to consume this fruit. The bodies of demons were much stronger than that of humans by nature, and every demon was of the dark attribute. They were naturally good at using the power of darkness, and the Dark-Dark Fruit suited them well. Even if it involved bloodline transformation, he would not need to be worried about it. After ingesting the Dark-Dark Fruit, Roy might even be able to develop greater abilities of the Dark-Dark Fruit.

He was the type to do things immediately after he thought of it, so he immediately started defining the Devil Fruit he drew.

Name: Dark-Dark Fruit

Explanation: After taking one bite, gain the dark power within the fruit.

This definition was very simple. Roy knew very well that the system would read the concept of the Dark-Dark Fruit in his memory to add to its abilities after he set its name. Just like with the T-Virus, he did not need to know its principles as long as he had the concept and understanding of the T-Virus in his mind. This would equate to the 'information' about the T-Virus! The system would then convert this information, consume an appropriate number of souls, and materialize it.

Roy first tried to see how many souls he would require to materialize the original Devil Fruit. What Roy did not expect was that it would only consume five hundred souls!

This amount was a little out of his expectations. He thought it would be much more.

But in fact, this was an error in Roy's thinking. First, five hundred souls was actually a huge amount. Second, although Devil Fruits were magical, it was not like they were at the level of mythical power. In essence, it was just a group of quintessential dark element power. Moreover, the original Devil Fruits had common shortcomings, such as fear of water, Seastones, and the like. These shortcomings also reduced the requirement to materialize it.

Now that he found that he had enough souls, Roy was naturally more at ease and could add more definitions.

Unafraid Of Water: Able to swim after ingesting it. Show no signs of weakness when in contact with water.

The first definition Roy added was this. He intended to eliminate the weakness of the Devil Fruit.

Roy turned to the system and found that it would cost more than fifty souls to eliminate this weakness, which was almost a tenth of the total number of souls to materialize the Devil Fruit. It was a little too much, but Roy felt that it was still acceptable.

He guessed that he would need a similar amount of souls if he were to set a definition to be unafraid of Seastones. Roy did not add this definition since he felt that he would not encounter it unless he went to the One Piece world.

Roy had a total of 621 souls. He would be left with some souls if he were to exchange 550 souls, so he deliberated some more before adding another attribute: Lessened Pain!

The Dark-Dark Fruit absorbed damage, but at a price—he would feel double the pain. Roy wanted to weaken this shortcoming. Roy did not set how much to lessen and chose to hand over to the system for adaptation. He intended to use up the remainder of the souls to reduce whatever he could.

After finishing his definitions, an enhanced version of the Devil Fruit was born. Similar to the T-Virus, the Devil Fruit was a static item made by exchanging low-quality souls, but it was an item with system skills. After eating it, Roy could obtain or develop corresponding skills. He did not need high-quality souls to customize skills, saving a lot of trouble.

He colored the Devil Fruit and hit save. There was no countdown this time. Before long, a golden pineapple-like Devil Fruit appeared in Roy's hands.

Roy did not know if the original Dark-Dark Fruit was this shape, but it did not matter. It would still be the Dark-Dark Fruit even if it were poop shaped!

After appreciating his work a little, Roy opened his mouth to take a bite.

However, right at this moment, a voice came from behind him. "Boy! What do you have in your hand?"