The moment it appeared Itadori and Mahito's battle to the death was resolved, the being wearing Geto's body asked, "Shall I save you, Mahito?" Itadori immediately recognizes the man before him as the very same one who sealed away Gojo and leaps to attack.
the cursed spirit that 
impregnated my mother,
.والروح الملعونة التي حملت منها أمي
lo spirito maledetto che l'ha messa incinta
o espírito amaldiçoado que
engravidou minha mãe
от оплодотворившего её проклятого духа…