I've seen people demonstrate that he is definitely a partial HR (based on statements), however, could he get stronger? We can see through Maki that despite having a partial HR, She could still get physically stronger, so could Yuji get physically stronger? Or has he reached his physical limit?
Tava muito bom
As soon as Sukuna is hit, he immediately demonstrates that he had low Output because he had only recently awakened, But we don't know HOW low that output would be, so let's make a comparison in another "similar" low-output situation, And that's where Sukuna's technique output would be hindered by the megumi. He demonstrates that it could be 10% output in technique, and I find it more acceptable as "general" in newly awakened techniques Considering that Sukuna was hit by Yuta's newly learned Hollow Purple (it wasn't just Output, but all the manipulation involved), but the issue isn't about Yuta, The issue is that even with low output, it still caused this type of damage to Sukuna, even leaving scars on her, Even in this version of Sukuna, which would still be at least Top 3 in durability, even if the dismantling were to affect anyone other than Gojo or Sukuna, there would be serious problems here... But that wouldn't be Yuji's full Capacity.
The black flashes, Although they only have some temporary properties, it is revealed that they make the person have a better understanding of their OWN cursed energy/core/essence, as stated by Todo, Mahito, and Nobara, Mahito claims that Black Flashes help one better understand the essence of their own soul, and he himself states that the soul generates feelings that resurface as cursed energy, And after the second Black Flash, he finally manages to fully understand his own true essence... Demonstrating that Black Flashes allow a person to explore their own potential, each Black Flash puts the person on a completely different level than before (as stated by Todo), Helping the person discover the other layer of their own potential.
And Yuji demonstrated a SIGNIFICANT improvement in his skill in a short period, such as simply restricting the target of the technique to between the souls of Sukuna and Megumi, And only using binding votes to achieve efficiency better than physical blows, but TOTAL credit is his own, even expanding the domain for the FIRST Time and using the unique method Serving as a guaranteed hit (Dismantle in souls), So, by comparison, the control group should be MUCH more advanced than it was before.
Mahito It was indicated that Junpei, having recently awakened his abilities, could improve his output as he is taught, and it was shown that in a few days he could freely realizing the shikigame size is LARGER than a person and the poison's strength is lethal demonstrates that its Output was normal (100%), So Yuji's CT Output could normally be at 100%, especially considering he performed 9 Black Flashes in total in Shinjuku, Therefore, even after Sukuna or a few days later, it should already be at 100%.
So considering Yuji EOS at 100% CT Output, it could practically be a fatal blow to anyone (except Sukuna and Gojo).
I apologize if there are any grammatical errors in English.