Revelations

Sukuna's finger is a cursed object that grants immense power. Yuji swallows one and becomes Sukuna's vessel

Sukuna can take over Yuji's body and is far more powerful than any cursed spirit

Satoru Gojo is the strongest sorcerer alive: his Infinity makes him untouchable

Geto is alive, but his body is being used by someone else (later revealed as Kenjaku)

Gojo's Past: Young Gojo and Geto were best friends and the 'strongest duo' of their generation

Toji Fushiguro was Megumi's father: a man born with zero cursed energy but superhuman physical abilities (Heavenly Restriction)

Geto's fall, after witnessing humanity's worst, he concluded non-sorcerers should be eliminated. Gojo killed him.

GOJO SEALED in the Prison Realm by Pseudo-Geto (Kenjaku wearing Geto's body). The strongest sorcerer is removed from play.

Sukuna has a fire-based technique in addition to his cutting ability, destroys Shibuya with Malevolent Shrine

Kenjaku (in Geto's body) absorbs Mahito and initiates the Culling Game: a deadly ritual to optimize cursed energy across Japan

The Culling Game is Kenjaku's plan to merge humanity with Tengen, creating a new form of cursed energy

Maki achieves Toji-level Heavenly Restriction after Mai's death, zero cursed energy, superhuman physical abilities