Based on Gojo's Death & Afterlife. We know that the Soul turns into its Best Form based on Late Principal Yaga's Appearance.

Can you Imagine "Prime Kenjaku". Like His "I have lived for 1500 years" speech only to be reduced to a ducking 🧠 Brain. Cause that's prime kenjaku. The 4 Cursed Techniques, Immortality, Open Domain, all reduced to a ducking 🧠 brain in afterlife.

I didn't Find a Good Explanation for this, So here it Goes —

Stem Cells

Stem Cells are primarily responsible for Regenerating

1. Fat Cells

2. Skin Cells

3. Red Blood Cells

As well as Healing Injuries.

Since the Death Painting Wombs use Cursed Energy to create Red Blood Cells, it's natural to determine the process is different, but the result is identical.

Yuji's Stem Cells never NEED to produce Red Blood Cells and thus Yuji ages Slower.

It's literally the limited divisions of his stem cells being used exclusively for other purposes since the death painting wombs generate plenty of blood that leads to his Unnaturally Longer Lifespan.

Get the Biology factor?

We all Know that Kusakabe is the Heir and "Best User" of Simple Domain.

"Fake" — Kokichi Muta after losing his Heavenly Restriction was still the Best Simple Domain User.

Kusakabe is Considered a "Genius" for Passing Grade 1 Test with just his CE, using Simple Domain without Binding Vows and Modifying the Simple Domain to Attack Reflexively.

When Kokichi was the Really Genius for using 2 Techniques Simultanously, creating a new application for simple domain in a very short timespan. A Feat Sukuna Recognized in Higaruma Hiromii.

If Kusakabe could do so — Choso wouldn't be Dead right now.

After Maki's Twin Sister Died, She Completed her Heavenly Restriction.

But The Reverse is also True — Wouldn't Kokichi Muta's Recovery also turn his Heavenly Restriction 0.

Kokichi solely couldn't Communicate with anyone across Japan because his Heavenly Restriction turned 0 in his Fine Health. In this State — Kokichi was Simultanously using his Puppets as well as Opening Simple Domain at a Range Outside his Body. Mind you, he had previously 0 need to learn that. He learned it during the short timespan from his Binding Vow with Mahito to their Deathmatch.

I assume Kokichi placed a hair inside the needles and expanded his Innate Domain by Injecting the Hair in Mahito's Body. But doing so at a Range while using another Cursed Technique (puppet manipulation) is clearly a better feat than Kusakabe's addition/ modification of Simple Domain.

As we Know — Ryomen Sukuna has 20 Fingers with each Finger (a Cursed Object) with Special Grade Cursed Energy Reserves.

We Also know that Ryomen Sukuna made a Death Binding Vow to make his Fingers Harder.

So, Hear me Out.

Ryomen Sukuna Originally had the Cursed Energy Reserves of 3/4 Fingers. However, Using the Death Binding Vow to Turn his Fingers Harder combined with his Natural Special Grade Strength — Ryomen Sukuna has Access to 20 Fingers Worth of Cursed Energy constantly.

We learned in Modulo that Cursed Tools are always at 100% CE output. They don't Run out of Cursed Energy like Humans.

Sukuna Essentially Turned his Fingers into a Cursed Tool as well as a Medium for his Reincarnation with Ultra-High Cursed Energy Reserves with Death Binding Vow.

Gojo was Fighting an Unfair Fight from the Beginning. His Opponent already gave up his Life for Greater Cursed Energy (Indirectly).

Gojo Risking his Life in exchange for Faster Growth might have narrowed the Gap, but it certainly wouldn't be Enough.

Sukuna really was a Binding Vow Merchant.

What do you Think? The Heian Era wasn't that Strong. Sukuna just used a Binding Vow to make himself Appear Stronger afterwards.

We know that Cursed Techniques Function at

Chant+Handsigns =100% Output

Without Chant =80% Output

But Revealing One's Hand (Binding Vow): raises Cursed Technique Output to 120% Output.

Would Ryu Ishigori explaining his Technique Granite Blast raise his Cursed Technique Output to 140% or Just 120%.

Lastly, Can Ryu Ishigori raise his Output to 140%/160% with Chant+Handsigns, Revealing One's Hand?

Lastly, How High would his Output Go in Domain Expansion?

Grade 2 Sorcerer.

Age: 32

Born with 24 Frames Per Second Cursed Technique, Haykin knew the Average'ness of his Talent, Haykin Vowed to Compensate for his Lacking Cursed Energy with Techniques.

Cursed Techniques

(1) 24FPS

(2) Piercing Ox "Ox Charge Attack"

Haykin Plans to Learns "Airplane Hair" If possible.

End of Season Yuji Itadori & Yuta Okkotsu are More OP than People are willingly to realise.

The Original Death Painting Brothers "Eso" and "Kechizu" both had special upgrades to their "Blood Manipulation". "Eso" had Maximum "Wing King" that Allowed him to make Wings entirely out of Blood and Fly/Float with Them (Without Flapping or Visible Speed Boosters). "Kechizu" had Maximum "Decay" that turned his Blood into Poison. They both also had "Rot" extension of Blood Manipulation which corroded anything blood came in contact with. Naturally, We can Deduce with this Information that each Death Painting Womb had some Special Ability to their Blood Manipulation. Taking the Death of "Eso", "Kechizu" and "Choso" into Consideration, Yuji Itadori must have eaten the remaining 7 Death Painting Wombs.

Yuji Itadori's Punches give

• Blunt Damage thanks to his Superhuman Strength
• Sharpness Damage thanks to his Binding Vow to only use "Dismantle" or "Cleave" on Targets he was Physically Touching. (Not that it Limits him as Blood Manipulation Extends his Range).
• "Black Flash" raising damage to the Power of X raised to the power of 2.5 (Punch x Punch x (Punch/2)
• Soul Damage thanks to his Natural Awareness of his Soul's Contours.
• 7 Unholy Maximums from 7 Death Painting Wombs he Ate. (Only Gege and God knows what their are, but they will certainly be broken). Yuji Itadori will definitely awaken them over time thanks to his Blackflashes giving him a better understanding of his techniques. P.S. - He's got roughly 400 years to Live thanks to his Physical Condition.

Yuta Okkotsu

• That CE output is goona do all sorts of Damage to you
• He's gotta a Sword to make it Worse (If it matters)
• Good Luck getting Past "Rika" He's Also got Immortality from Kenjaku's Brain Transplant Technique (That's how he got back into his Original Body - It came back after Burnout from DOmain Expansion).

We Potentially had 2 Immortal Special Grade Sorcerers with Unholy Levels of Versatility guarding Japan.

P.S.> I am the Only one who thinks Rika was Incredibly Lonely and Therefore Latched to the Only Person who cared about her - "Yuta" Harder. Like, We know She faced the Loss of both her Parents One by One, Her Grandmother considers Rika - Her Grandchild the Murderer. Maybe she felt incredibly Lonely (And Her Cursed Energy Skyrocketed as a Result of Pain) and then when she met someone who was with her in her trying times - she Died??? Like, I know Yuta had the Blood of Sugawara and Fujiwara flowing in his veins, but Rika didn't. Her Natural OP'ness is required to come from Grief as per JJK Cursed Energy rules (Cursed Energy is formed from Negative Emotions AMONG CIVILIANS, a sorcerer is capable of naturally making his own CE).

Dragon Domain

Instead of Expanding Your Domain, we Compress it. Similar to Mahito vs Mechamaru. Mechamaru used an Injection with "Simple Domain" expanding inside Mahito's Body causing it to Explode.

Mahito took Soul Damage back then, but covered it up with Idle Transfiguration.

Slicing and Piercing attacks can be used to transport your Compressed Domain inside Enemy's Body which naturally releases itself (and blows up).

P.S. Since the Body Follows the shape of Soul, I don't think Cursed energy can protect you from this.

Extension: Domain Compression - Supression Someone Else's Domain Expansion.

RCT: Domain Amplification.

Domain Expansion: Immediate Soul Implosion.

1. Supresses Other Domain in the Domain.

2. Crushes Humans into Tiny Mushes via Imploding their Souls (Kinda like Kenjaku's Womb Profusion - Cursed Spirit Manipulation Open Domain).