As Itachi finished stabilising his physical body and acclimating himself to it, he also coincidentally broke through to the 4th stage of the Spirit profound realm.
He immediately realised that it was due to the fact that his body had been strengthened so drastically, and been refined so that not only was he able to better absorb and process profound energy throughout his body, but that the filtered profound energy into his profound veins was purer.
Moreover, a stronger vessel can absorb more energy, and this was shown through Itachi instantly reaching the 4th rank of the Spirit profound realm.
Feeling ecstatic at a natural breakthrough to the 4th rank of the Spirit profound realm, Itachi was ready to go out and test his power on his fellow Burning Heaven clan youths.
Even without his sharingan powers Itachi believed he would be able to at least fight peak stage Earth profound realm cultivators using the power of the {{Evil God Arts}}.
He could now open the 3rd gate, Purgatory, and employ its effects in battle, and if he went all out, he might even be able to fight even late stage tyrant profound realm cultivators overlaying Purgatory with his susanoo.
As Itachi was thinking about the extent of his power he suddenly heard the voice of his adoptive father, Fen Moran,
"Itachi its time for you to spar with some of the other talented youths of the Burning Heaven clan."
Fen Moran came with a big smile on his face as he said these words, since his son Itachi was only 17 but already possessed...
Suddenly he faltered as he saw that Itachi had broken through again!
"HAHAHAHA, he possesses not only Spirit profound realm cultivation at such a young age, but 4th rank Spirit profound realm cultivation. Good, good, good!"
Absolutely ecstatic at the abilities of this son he had seemingly picked up out of no where Fen Moran picked up Itachi while still feeling incredibly happy, taking him to one of the sparring grounds of the Burning Heaven clan, known as the heaven piercing ash ground.
This was because this field was high up on the 1st mountain of the Burning Heaven clan, where only important figures could go, or incredibly talented members of the Burning Heaven clan, and also because it was completely black, appearing to be formed out of black ash.
Itachi was dropped by his father Fen Moran, and looked around, spotting at least 15 other youths, who were clearly all incredibly talented, the weakest of them emanating the aura of the late True profound realm, and the strongest emanating an aura even higher than that of Itachi's, being at the late stage of the Spirit profound realm.
The youngest was 16 and the oldest was 20, with Itachi being one of the youngest at 17.
The other youths all looked over at Itachi, however once they saw his youthful face and the aura that he was emanating at the 4th rank of the Spirit profound realm they immediately gained a hint of respect in their eyes, no longer looking provocatively at him.
Itachi laughed inwardly thinking to himself,"Truly a world where the strongest fist rules, these people looked at me attempting to see if I was weak enough for them to assert their dominance, however upon seeing my apparent age and ability, they decided I am not to be provoked, its funny really."
As Itachi lamented the state of the world he was in, he suddenly saw a youth being bought over, who appeared to emanate an aura which was hot, and shockingly was at the 8th stage of the Spirit profound realm.
Itachi knew that this was in fact the most talented youth besides him who would be participating in the Blue Wind Ranking Tournament, from the Burning Heaven clan, Fen Juebi, son of the clan leader.
As soon as Itachi saw him he decided that he would be the one to assert his dominance, by defeating this 'talented genius' and testing his strength on him as the other youths were not even close to being challenges for him, and Fen Juebi himself wouldn't possess any real threat for Itachi at all either.
Itachi stepped forward unceremoniously, since he knew that this was supposed to be an informal sparring competition and said,"Fen Juebi I have long heard of your illustrious name, would you care to battle with me, Fen Itachi."
Itachi painted the picture of a talented genius, neither humble nor arrogant, however Fen Juebi seemed angered by being the first to be challenged, by someone who in his mind, was insignificant since he had never heard of this 'Fen Itachi' before.
Laughing angrily, Fen Juebi said,"I can't say the same for you Itachi, however we can fight for sure."
Having said these words a shocking battle intent filled Fen Juebi's eyes.
The other talented youths and important elders of the Burning Heaven clan moved to the edge of the heaven piercing ash stage, ready to watch a fight between two geniuses of the Burning Heaven clan, albeit most of them expected the more well known Fen Juebi to defeat Itachi, since Itachi appeared to be 4 ranks weaker than Fen Juebi in profound strength.
Many of the youths and elders were lamenting the arrogance of Itachi, even Fen Moran seemed puzzled by Itachi choosing to fight the strongest youth there, who clearly possessed a far greater strength than him.
As Itachi stood there lazily, Fen Juebi seemed to become even more enraged as he didn't see his opponent drawing a weapon.
Snorting he said,"You may have the first move."
"No thanks, you first."
Hearing Itachi say these words Fen Juebi truly felt a spark of wrath, laughing with rage and saying nothing else, violently attacking Itachi.
"{{Black ash sears the heavens}}"
As Fen Juebi said these words a rapacious crimson flame, tinged with pure black flames around the edge surrounded his body, emanating an intensely hot temperature and heart stopping aura of profound strength.
"Truly... I'm disappointed by the youths of the Burning Heaven clan."
Having said these words quietly, Itachi suddenly opened the Purgatory gate, gaining an incredible increase in power, his seemingly tame profound energy at the 4th rank of the Spirit profound realm, skyrocketing to a level where it seemed as if it could even rival the elders of the clan.
With no techniques or fancy movements, merely combining the force of his profound energy, with his now incredibly powerful physical body, Itachi punched out, ignoring the flame surrounding Fen Juebi's body.
Itachi's fist connected squarely with Fen Juebi's face, and as if he was punching a paper wall, Fen Juebi's face seemingly crumpled, before his body shot backwards, appearing like an imposing flaming comet, soaring directly to the far side of the heaven piercing ash stage.
Fen Juebi rolled for at least 400 metres, before coming to a stop, and he was almost unrecognisable from the damage caused by Itachi's punch, completely unconscious and appearing to have broken multiple bones and suffered many injuries.
Everyone was in shock for a second, before Fen Moran started to laugh loudly.
"Truly... an incredible genius, nay, a true genius!"
Upon hearing these words Itachi could only smile wryly before turning to leave the stage, feeling that what he had done was not truly that impressive, merely smacking around an arrogant youth who thought too highly of himself.
The only reason Itachi attacked with as much power as he did was because he felt a hint of killing intent from Fen Juebi, which angered him to the point that he decided to unleash an attack more powerful than what he was originally planning on, to the point where Fen Juebi had been beaten up as badly as he had been.
Itachi left the stage, leaving all the rest of the youths, and even a few of the elders in awe of the power he displayed.