The black smoke that appears from Jovan is fist and spread towards his surroundings then devours all mobs or creatures who come to him.
All of the creatures got sucked into his darkness and Jovan said, "Absorption.". Then, the darkness that covered his hands got glowed with a white aura.
Yes, what Jovan is absorbing right now is energy from the creatures that got sucked into his black hole. Of course, he can't absorb all these energies into his body because his body can't bear them. So he needs a container to contain this energy.
Usually, when in the real world he will use the flesh and blood from a mutant beast that he kills to become a container and make it into a potion for him to increase his physique and energy in his body which is more several times effective than eating it directly.
After all, the mutant beast or monster's flesh on this island and the real world contains so much tonic and energy to increase someone's physique and energy. Even though when you eat it directly it is effect not as good as a potion Jovan made from the same material but still good rather than not at all.
Jovan who already know these monster trial are just projection that is made from energy, already prepare several strong beast bloods that he brings with Ninja scrolls to keep this energy and not waste it.
The blood-red drink he is drinking before also the blood of the beast that already fills up with energy. Even though its taste wasn't good but the effect was very good and he is already getting used to it. Besides that, he can only drink one bottle a day because of the huge energy on it. If he forces it most likely he will explode and die.
By the way, all of you must already know what Jovan's Devil Fruit is from a previous demonstration. Yes, it is Dark-Dark fruit a special Logia-type Devil Fruit, even though it can't become an elemental person like the other Logia-type Devil fruit. Jovan got or buy this Devil Fruit at the Devil Fruit market when he is still 12 years old. It was completely a leak.
Even though he paid a heavy price to get it but it was worth it. Look at the present, he not only has strong power but also no shortage of money at all to prepare everything for this journey to the Island World.
After Jovan put energy in his hand to the blood beast bottle he prepares, and then he immediately continues his technique, "Liberation.". The darkness on the ground gathers and becomes a big ball above his head then spitting out all the things he devours before.
All of them which is a trees, rocks, and bones of the creatures he absorb before. It's spitting out like it was rain.
"I think this is the last batch of creatures in this place.", said Jovan while looking and feeling his surrounding using a chakra. Even though he can't use any detection Jutsu type, he still can detect his surroundings but it will cost much more energy than usual when using detection Jutsu type.
It didn't take a long time when Jovan to hear a notification from System of Island world.
[Ding!!! You kill all creatures on the Island.]
[Detected!!! You over-completed the mission.]
[You can choose one choice of the following rewards:
A. Choose 3 treasures and you can see a description of the item.
B. Choose 4 treasures and you can see an item name.
C. Choose 5 treasures.]
"Wow, I guess I am the only one in history that can choose up to 5 treasures at the start of the Island world.", said Jovan while looking at the choices in front of him.
Seeing these choices, honestly, all of them are very tempting for Jovan. The first choice is good because even though he watches all anime that have a connection to this world but it doesn't mean he knows everything about it.
The second choice is also good with only the name of that item maybe he can immediately guess what it is for. The third choice is so good even though he can't see a name or description of the item but he thinks with his knowledge of anime in his past life he can be sure to pick up a good thing.
After struggling for a while, "I choose the third one.", even though the first and second option is very good but Jovan chooses the third one because he is confident in his knowledge to get something good out of it.
[Ding!!! You choose C rewards. Please prepare to teleport.]
[Ding!!! Start teleportation.]
Then, Jovan's body got covered with white light again like 7 days ago. And got teleported to the Treasury space with it.
----
In the Big Treasury space, a spot of light appears suddenly appears. Jovan who teleport before got appeared on here.
When he is open his eyes, he sees so many shelves of colourful treasures. There are many kinds of treasures on the shelf and all of them can be sought by so many people if put in the real world.
[Ding!!! You already got teleported to the Treasury space. Please choose your rewards by touching them.]
[Note: What you touch is what you take. All of the treasures in the Treasury space are unowned treasures in the Island world.]
"I see, so I need to choose a treasure just through a sight. Well, no problem with me. And it's surprising to me for these treasures in this space are all items in the island world that got teleported on here when I choose it.
As expected from the Treasury house, looks like I didn't do wrong to choose a trial.", Jovan said.
"Now let's see a treasure that is suitable for me.", said Jovan while walking through so many shelves.
'There are so many treasures on here let's see there is Devil fruit, skills books, a treasure for upgrading a qualification, Zanpakuto, Dragon ball, It is Dragon ball is good but to gather seven of them is too much for me so pass. By the way, as far as I know, there are only five pairs of complete Dragon Balls in this world.
..., Saiyan tail, Hogyoku, Sharingan,... Wait, Hogyoku, If I am not wrong it is the treasure from Anime bleach that can make the people who own it can evolve and become powerful infinitely.'
Jovan looked at the small, and bluish-purple orb composed of a unique substance intensely. After a while, he finally makes his decision.
"I don't know if it will have the same effect or not. Whatever, take it first, after all, I still have 5 chances left.", Jovan said and take away Hogyoku from the shelf.
[Name: Hogyoku (Incomplete/defect) (1/3)
Type: Treasure, equipment
Description: This is a natural treasure of earth and heaven. There are only three pieces in the world. It will bring unlimited evolution, potential, and immortality to its owner.
Note: The effect will be less because of incomplete/defect. Complete the Hogyoku to feel it is true power. Go through a seal and touch it is power directly maybe will bring you a surprise. Not recommended in the Incomplete state.]
"As expected, this Hogyoku didn't disappoint me at all. But to find two more, will be a difficult thing to do. After all, these Hogyoku are so rare, but I think it will be no more problem to search here. Well, it's surprising thought that this Hogyoku is a natural treasure does not like in the anime that this is a man-made treasure.", said Jovan.
"Now, let's try this Hogyoku first maybe it can detect the whereabouts of another Hogyoku.", Jovan said and run all his energy and then inject it into Hogyoku.
Then, Hogyoku got glowing and let out a thread to the two directions.