How exactly are Gojo and Yuta related, and what role does their ancestor, Sugawara, play in Jujutsu Kaisen’s story?

During the events of the Shinjuku Showdown arc, as Yuji Itadori and Aoi Todo are about to be consumed by Ryomen Sukuna's Domain Expansion, Yuta Okkotsu returns to the battlefield after taking over ...

Yuta takes control of Gojo's body with his copy technique to face Sukuna, accessing all of Gojo's abilities. The battle between Gojo and Sukuna ends with Sukuna splitting Gojo in half, leading to ...