On the way, Roy played with the seven dragon balls in his hand, making a collision sound, causing the fat tiger's six ears to move, and from time to time he looked back at Roy, the master.

Making dragon balls in the system, each consumed about twenty souls of Roy, which is not much, but the sum of seven also consumed about one hundred and forty souls of Roy.

The Dragon Ball made by Roy does not have much effect, that is, it constantly emits a signal of a special frequency, and as a receiving device, Roy also created a Dragon Ball radar to show the strength of this signal.

And in the definition attribute of the Dragon Ball, Roy also added a [Resonance] attribute, which can allow the same Dragon Ball to increase the output of the signal when it is close to each other.

According to Roy's idea, this kind of signal can be transmitted to the abyss world when the abyss gate is opened, and then received by the Dragon Ball radar, so that because there are people summoning demons in this world at any time, then the abyss gate is always open, so the signal will not be interrupted, and when Roy wants to enter the hero invincible world again in the future, he can look for the signal to pass.

Of course, the next time he comes to the world of heroes and invincibles, Roy hopes to open a door to the abyss with great strength, instead of being summoned by others, if Roy can reach this step, it means that his strength is strong enough, in this world, even if he encounters a strong enemy, he doesn't have to worry too much.

In this world, the danger is still quite high, after saying goodbye to the ancient tree of Silena, Roy originally wanted to fly for a while, but he couldn't die, but a fire phoenix appeared in the sky, forcing Roy to walk obediently on the ground.

Let's go, it just so happened that Roy was also thinking about how to scatter the seven dragon balls everywhere, he originally wanted to add an attribute to the dragon balls that flew into the air and spread out, but he thought that there was no need for this, so he blessed himself with bloodthirsty surgery, and used his greatest strength to first throw out four of the dragon balls in the direction of southeast, south, northwest, and northwest.

Roy also knew that this would not be far away, and he could throw a few kilometers out of the sky, but it didn't matter, Roy didn't think about it, he had to let these dragon balls fly across the ocean to another continent, the dragon balls were just a beacon, so a few kilometers apart could also provide a signal, as for whether it would be picked up in the future, Roy didn't care.

In the end, there were three dragon balls left, and Roy asked the fat tiger to catch a few wild boars, and then stuffed these dragon balls into the boar's belly, and then let them go, so that these wild boars would run around with the dragon balls, and if they were preyed, then they would be relayed by other beasts to spread these dragon balls.

I just don't know how long it will take for the ancient tree of Nasilena to spread the news of the dragon jewels, and how long it will take for someone to collect these dragon balls.

In Roy's mind, it will be at least a few years......

The time of the abyss world does not seem to be synchronized with the time of these other worlds, so a few years sounds like a long time, but maybe when Roy just returns to the abyss world, the time here has already advanced for a long time, so Roy feels that he doesn't need to care too much about the time factor, and even if someone really gathers the dragon balls in a short time, he can choose not to come, he is positioning this world, it is nothing more than coming to hunt souls to improve his strength, and he doesn't really want to be a dragon god to meet the wishes of the people who collect the dragon balls.

Since the demon army marched for about a month and a half, it was a long distance to go back to Castlevania, but it was not boring along the way, and I saw the diverse ecology of this world.

While passing through a swamp, Roy and Fat Tiger were attacked by a group of dragon flies, under a cliff, Fat Tiger caught several cave people in a dark cave, and at night, looking for firelight, Roy found a camp of wandering dark elves, a group of masked dark elf assassins attacked Roy, only to be killed by Roy.

In the sky, you can often see some fierce birds of prey, thunderbirds, fire phoenixes, and dragons, these creatures are the sky overlords of this world, although Roy and Fat Tiger have wings to fly, but in order to avoid unnecessary battles, they still rarely use flying to hurry.

Creatures like this can be said to emerge endlessly along the way, when the demon army was in a hurry, these creatures often retreated, but now they feel like they are popping up one after another, and lonely demons like Roy are basically the targets they want to attack.

There's no way, demons are hostile to almost all races in this world, after all, they are alien species.

Among the various creatures he has encountered, Roy's most hated may be the undead! These wild undead are usually formed by the pollution of dark forces after the death of creatures, without intelligence, just instinctively constantly attacking every living creature, for Roy, killing these undead, can not get any soul, it is simply a waste of effort, and on the contrary, this kind of wild undead is still very common, maybe a remote place will suddenly appear one, it is simply annoying.

Along the way, either Roy hunted other creatures, or other creatures took the initiative to attack him, and after a long time, the soul in Roy's hands slowly accumulated a lot, except for a small part of feeding to the fat tiger to accelerate his growth, the rest were made into essence magic potions by Roy, and he didn't know how much magic power was needed to open the teleportation array in reverse, so it was naturally necessary to prepare some essence magic potions in a safe way.

However, it is worth mentioning that when Roy used some more essence magic potions, the strange feeling on his body reappeared.

Compared to the last time, the feeling of heat in my body was even stronger this time, and I could feel my heart pounding rapidly.

After this situation appeared again, Roy did not dare to continue to use magic potions to increase his magic energy attributes for the time being, and he temporarily stored all the magic energy potions he made.

He guessed that it was because his body was now about to reach its limit, which was why he had this strange symptom.

In fact, if you think about it, Roy's current magic energy attribute has been increased to almost 400, almost all of which are improved by the essence magic energy potion, according to the extraction efficiency of the magic energy potion on the soul power, his 400 magic energy attribute is almost equivalent to the level that other lower-level demons can only achieve after devouring seven or eight hundred souls.

As far as Roy knows, judging from the promotion conditions of demons, many lower-level demons are instinctively chasing and hunting souls to devour, and when they reach a certain level, they may reach a bottleneck because of the magic power that can be contained in their bodies and bloodlines, so they will seek a way to break through by themselves, and this method is to go to the lower abyss world, find a place to refin, and purify their bloodline.

This is how to promote to the middle of the demon, although Roy has no memory of this promotion, but he also slowly deduces it by contacting other demons.

Maybe it's because the bloodline of the lower demons is not the same, some of the lower demon bloodlines are relatively pure and single, so the upper limit of the magic power that can be accommodated is also relatively high, and the souls they need to hunt may be thousands, which will cause them to stay longer in the shallow abyss world, becoming those old demons that Roy has seen, and in the same way, some of the lower demon bloodlines are more complex, and the upper limit of the magic power that can be accommodated is relatively low, so it may be that after devouring hundreds of souls, the magic power will reach a bottleneck.

Roy estimates that he is afraid that it is the latter, in the display of the system, Roy's demonic body bloodline is complicated, plus he improves his magic energy by making his own potions to improve, so he will reach the point where he needs to be promoted so quickly.

Along the way, Roy was actually thinking about whether to make a refining potion to use by himself, so that even if he didn't have to go to the lower abyss to find a place for quenching, he would be able to complete the promotion.

But after thinking about it, Roy didn't do it, because he still hadn't figured out what the principle of the refining place was, and whether this kind of purifying bloodline was only one of the pure bloodlines, or did it mean that all the bloodlines he had could be promoted? After all, according to genetics, in complex bloodlines, there will always be some genetic factors that are dominant, some genetic factors are recessive, the dominant ones may not be useful, and the recessive ones may not be useless. Roy needs to understand all of this, and if he recklessly makes his own purification potion, he may make a mess.

So Roy decided that after returning to the abyss, he would go to the lower abyss to have a look, find the place of refining, and observe what those promoted demons do, and whether to use the place of refining to complete the promotion, or use the system to make potions for promotion, and then think about it slowly.

In this way, after a few weeks of stop-and-go, Roy finally returned to the location of the volcano where Castlevania is located, led by Fat Tiger......