if I'm correct the narrator is saying the "DEPARTED SPIRIT" of the strongest or the "GHOST" of the strongest. so sukuna might be seeing gojo's spirit or someone is making an illusion of gojo standing. in short gojo is still dead. as gege said he will never bring back gojo no matter what. but we still have to wait till the next chapter. until then let's not get our hopes up again
if I'm correct the narrator is saying the "DEPARTED SPIRIT" of the strongest or the "GHOST" of the strongest. so sukuna might be seeing gojo's spirit or someone is making an illusion of gojo standing. in short gojo is still dead. as gege said he will never bring back gojo no matter what. but we still have to wait till the next chapter. until then let's not get our hopes up again