Domain Expansions are known to be the epitome of Jujutsu Sorcery and, as such, not everyone can gain this ability. Only the most talented and strongest sorcerers can gain access to the power of Domain Expansion, and even among those who gain this ability, not everyone has a domain that can be considered to be overpowered.

Unlimited Void, which is the Domain Expansion of Gojo, is considered to be one of the mightiest to exist in JJK. Essentially, it sees Gojo imbue his Innate Technique into the domain and bombard his enemies with unending information, paralyzing them and dealing tremendous mental damage to them in the process. This Domain Expansion is incredibly overpowered; however, there are those that are close to it in terms of strength. While not many can match it equally, quite a few can be considered to be almost as good in terms of power.

Idle Death Gamble is a Domain Expansion that works very differently when compared to Unlimited Void; however, it can be considered to be incredible in many ways. Essentially, Hakari, the user of this technique, is able to create a Pachinko-themed game on a train station using his Domain Expansion. The goal here is to luck out using a Jackpot. If Hakari hits the jackpot, then he gains infinite cursed energy for 4 minutes and 11 seconds. Furthermore, any injury that he receives during this time is automatically healed, no matter how severe it is.

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