In fact, choosing to kill Askaros, Roy wanted to verify whether Askaros's own soul had grown after devouring high-quality souls.

The reason why he wanted to verify this was because Yascalus said that if you want to go to the lower abyss world to find a place of refinement, you must be promoted to a mid-level demon, Yascalos may know how to be promoted, but he chose to lie to Roy - of course, it is also possible that he really doesn't know, but anyway, Roy still vaguely feels that the key to promotion is still related to the devouring of souls, and it is very likely to refer to the growth of souls.

Only when the soul power of the soul has grown to a certain extent can it become a median demon......

However, unfortunately, Yascalos encountered a powerful enemy in the process of being summoned, so that he was killed and expelled, although he returned to the Abyss Demon Realm, but his soul was damaged, so that Roy couldn't see if his soul had become stronger, so it was impossible to know for the time being, whether that high-quality soul sacrifice had brought Yascalos a soul boost.

Roy didn't know if his guess was right, but he believed that there was definitely a reason why demons would chase souls tirelessly, and not just for the sake of being addicted.

Devouring souls can help demons accumulate mana, this first benefit has been confirmed, Roy during this time, the magic energy in the attribute has been restored to the full value, and the increase of 0.3 has not changed, which means that the soul that was devoured before has indeed brought him a ceiling increase.

According to the information in Yascarus's words, the demon's heart is the memory of mana, which explains why Roy felt a stream of heat flow to the heart when he devoured his soul.

And what Yascalus said, the bloodline of the lower demon is complex, and it seems that the output circuit of magic power cannot be constructed in the body, so the fact that the lower demon has no magic power but cannot use it does not apply to Roy, because he has confirmed that he can activate telekinesis by consuming magic energy.

This made Roy understand one thing, in the interface of the system, the reason why his attribute will display [magic energy] instead of [magic power] probably refers to he, an outlier among demons, who can use more than just magic!

Superpowers, fighting spirit, spiritual power, etc., maybe Roy can use them, so the [magic energy] in the attribute is actually just a general term, referring to the source of all supernatural energy, which is actually different from the magic power required by demons to use demonic spells!

After figuring this out, Roy suddenly became interested, yes, since it is a private customization system, doesn't it mean that he can customize his own magic and skills? Anyway, in the end, all that is consumed is magic energy, so there is no need to consider any domineering and chakra incompatibility at all!

So, how do you customize skills? Roy couldn't help but open the system interface and looked at the two function tags of [3D] and [AE], and his intuition told him that these two functions might be the key to customizing skills, but unfortunately, these two function tags are currently bleak, indicating that they are temporarily unusable.

"This must be a lack of use, right?" Roy unconsciously wagged his tail and thought: "Judging from the fact that everything in the system consumes souls, the conditions for the use of these two functions should also be related to souls!" And, maybe it's a high-quality soul! That's right, it's a high-quality soul! ”

Roy was suddenly refreshed, he had wondered before, since low-level souls can also be used to transform their bodies in the system interface, then why should there be a distinction between low-grade and high-quality qualities, and now he finally understands that high-quality souls belong to high-level applications in the system!

So, Roy has a goal next, which is to obtain high-quality souls to verify it.

Stretching out his claws, Roy grabbed the corpse of Askaros and dragged him off the altar with some effort, Askalus's tonnage was too large for him to occupy on the altar, and after cleaning the altar, Roy began to wait on the sidelines.

From hatching to the present, Roy has captured some low-level souls in this upper abyss world, and it seems that if he wants to get high-quality souls in this upper abyss, he is afraid that there is little hope, even if there is a real chance of appearing, the estimate is relatively low, so Roy simply set his sights on the other worlds connected by the abyss gate.

Roy didn't wait long, the magic array on the altar shimmered again, and the humming was activated, and a touch of blood began to waft out of the void.

Well, that's good! This means that the summoner of the world opposite the Abyss Gate still uses blood to lure and attract demons, which is good news for Roy.

For Roy, he didn't want to crash headlong into a high-force world now, and fall into the fate of Azcarus's being killed and expelled, but this kind of blood to attract demons was the best choice, because the summoner on the opposite side was either half-and in a world where occultism was not developed, or he didn't have a high demand for demonic power and just wanted to attract low-level demons to accomplish some small things.

Either way, it's a good choice for Roy, who is summoned for the first time.

But Roy still waited a little longer, he wanted to judge the strength of the summoner's magic according to the time when the magic array was activated.

As a result, during the time that Roy was waiting, there was a little devil who was attracted by the smell of blood, and when this little devil climbed up to the altar, after seeing Roy, a competitor waiting next to him, he didn't know who gave it courage, and even threatened Roy with his teeth!

Faced with this little devil who didn't know whether to live or die, Roy slapped it very simply! Smash this little devil's head!

Picking up a low-level soul, Roy put it away, and stepped into the magic array, he saw that the light of the magic array was almost gone, and the summoner's magic power was not enough, so he responded to the call with confidence.

The Abyss Gate opened, and the fog enveloped Roy's body, giving him a very wonderful experience, being in the Abyss Gate, surrounded by endless darkness, only a light came from above his head, which was the exit of another world, and Roy's body began to become void when he stood there.

His body seemed to turn into a ray of light, flying towards the exit above his head, and when he reached the exit position, all around him turned into a blinding light, and his body began to reappear.

As the dazzling light dissipated, Roy found himself in a strange place, and a loud scream came from his ears.

"Cheng ...... It worked!? ”

"The devil has appeared!"

"Good...... It's scary! Stand back! ”

Messy, all kinds of sounds came, making Roy irritated for a while, he looked down and found that he was in a magic array, this magic array is somewhat similar to the one on the Abyss Demon Realm altar, but it is carved into the ground dents, and flowing in these dents is red blood, which is like ink, outlining the magic array.

Around the magic circle, there are four human skulls placed at equal distances, and these skulls are also lit with burning candles, in addition, between the skulls, there are also several glass jars full of internal organs, and a rancid smell fills the air.

A group of people in black cloaks stood far away outside the magic array, looking at Roy who appeared in the magic array in fear, looking at their frightened looks, I am afraid that even they themselves can't believe that they have really summoned demons......

Roy is feeling very bad now, in the process of being summoned, he feels as if there is something more in his soul, it seems to be the Ouroboros mark, but this mark used to protect his soul from extinction, but it makes him feel slightly dizzy, and now this dizziness has not been eliminated, he first smells a disgusting rancid smell, coupled with the messy sounds of these people around him, it makes him very upset.

So, Roy couldn't help but open his mouth and let out a huge roar at these people!

"Shut up!! Who the hell is calling me!?? ”