You need 7,777 Gems to get Hakari. You must obtain the Jackpot 777 title to get Hakari.

It is based on the Pachinko gambling machines, and if Hakari gets a jackpot, he gets unlimited access to Cursed Energy during a Four Minutes and Eleven Seconds Window. He also has near-immortality ...

This means that in the blink of an eye, Hakari can activate a jackpot, giving him nearly infinite opportunities to attack, recover, and dominate in battle. Jujutsu Kaisen is held back by is its ...