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· Domain Expansion is a trump card-like technique for sorcerers, manifesting a barrier that encloses a 'sanctuary' embodying their inner landscape.
· Upon Domain Expansion, status buffs based on environmental factors occur, and the most crucial effect is that the cursed technique imbued within the domain is guaranteed to hit.
· This sure-hit is like strapping a bomb vest onto an enemy and holding the switch to detonate it anytime, ensuring damage regardless of the target's position.
· For techniques with difficult activation conditions, like Maijto's 'Self-Embodiment of Perfection,' Domain Expansion can overcome these conditions and ensure the technique lands.

· Maijto's domain 'Self-Embodiment of Perfection' resolves the activation condition for his close-range cursed technique, 'Self-Embodiment of Perfection,' allowing him to hit enemies that are difficult to approach or out of reach.
· Ishigori's Domain Expansion instantly fires and hits his long-range cursed technique, 'Granite Blast,' within the domain, making it difficult to dodge attacks due to their speed.
· Domain Expansion is a powerful technique that can instantly turn the tables in unfavorable situations, but it carries the risk of the cursed technique burning out after activation, making it difficult to use cursed techniques for a while.

· The most effective way to counter a Domain Expansion is to deploy your own. A domain with higher completion will push out the other domain, and the sorcerer with the advantage in the domain clash will have their cursed technique land surely.
· If the sorcerers' skills are similar, a domain tug-of-war can occur, potentially nullifying each other's sure-hit effects.
· For sorcerers unable to use Domain Expansion, a countermeasure is 'Simple Domain.' Simple Domain neutralizes the barrier of Domain Expansion, nullifying the sure-hit effect, but it's difficult to maintain against a true domain.
· 'Falling Blossom Emotion,' the precursor to Simple Domain, can prevent being pushed out by a domain and erase sure-hits if the hand seal is maintained.
· 'Flowing Scales of Justice,' a secret technique of the three great families, is a technique that repels cursed techniques upon contact, and can be used to weaken domain attacks that land numerous physical hits, like Sukuna's slashes.
· The possibility of erasing sure-hits with Domain Expansion is also mentioned, but it has not appeared directly in the story, only as a theoretical possibility.

· Before using Domain Expansion, one method is to sever the opponent's limbs to prevent them from forming hand seals.
· Maki and Toji, who possess no cursed energy, are spiritually inanimate and thus are not detected by the sure-hit of Domain Expansion, making them safe. However, they cannot evade slashes from domains deployed without barriers, such as Sukuna's 'Malevolent Shrine.'
· While the primary purpose of Domain Expansion is the sure-hit of cursed techniques, domains like Sukuna's 'Malevolent Shrine,' Kenjaku's 'Cursed Womb Must-Be-Born,' and Maijto's 'Self-Embodiment of Perfection' are domains that only possess the sure-hit effect.

· In the past, Domain Expansions often only had the sure-hit effect, but modern Domain Expansions expand upon the cursed technique, elevating it to the realm of 'innate technique' usage.
· Past sorcerers' domains (Malevolent Shrine, Cursed Womb Must-Be-Born, Threefold Cursed Spirit) only had the sure-hit effect of their cursed techniques, but modern sorcerers' domains (Infinite Void, Maelstrom, Horizon of the Captivating Eye, Empty Prison) expand their cursed techniques to exert more powerful effects.
· The reason why modern sorcerers find Domain Expansion more difficult and the number of users has decreased is due to this increase in power resulting from the expansion of cursed techniques.

· Itadori's Domain Expansion was deployed hastily, so like past sorcerers, it is a domain with only the 'sure-hit of the soul-cleaving Divine General's attack.'
· Higuruma's 'Sweeper's Scythe' is also a domain that forces rules by sure-hitting only his own cursed technique onto the opponent, without an innate technique. Not all modern sorcerers have reached the realm of innate techniques, so Itadori's domain can be understood as simply having a sure-hit.
· The 'soul slash' imbued by Itadori is not significantly different from Sukuna's slashes, and the intention was to target the boundary of the soul and separate it because Sukuna is in a reincarnated body. It is not an overpowered technique like 'unavoidable' or 'unhealable.'

· Gojo Satoru, if he wished, could implement various sure-hit settings like the sure-hit of 'Red' or 'Blue,' but he doesn't use them because making the opponent's brain explode by sure-hitting infinity is more powerful.
· The video has explained everything about Domain Expansion and concludes by asking viewers to leave comments about their favorite Domain Expansion.