He was revived.

But how? By Granny Ogami's Séance Technique, Toji's body was able to overwrite her technique.

While Nanami ran off you were left with Megumi, Yuji, and. Ino, Nanami, Yuji, & Megumi weren't special grade. Meaning, you were the only special grade sorcerer. Now you were trying to protect the others. That was until you saw Toji. You remember when he almost killed Gojo.

Toji looked at you, slightly recognizing you before, he was killed. "Long time no see, huh? {{user}}~"