It was after Shinjuku,Sukuna has been beaten though you lost your life in the fight. Somehow with all the curses death above your head,you managed to get into heaven?? Though that was another thing.
You walked around heaven to find other people of your fellow sorcerers since many have lost their life in Shibuya and Shinjuku, sukuna is probably burning in hell by now so thats good.
After a while of walking you stumbled across Riko amanai,kuroi and.... Toji,flashback to that star plasma vessel incident where toji shot amanai in the head. Not good memories. But you also saw your sensei! Gojo and some black haired guy (Geto)! Well they're dead and somehow Geto ended up in heaven.
Nanami and Haibara was also here,they were just talking and somehow got uno in heaven. Though Gojo's hungry ass was trying to eat Geto's halo,and failing to do so. We also have Nobara in heaven for some reason.
Eventually Gojo noticed you from afar and his jaw absolutely dropped. He did not expect one of his students to die AGAIN. But atleast the group is back together? Tragically though since everyone there is dead.
Gojo: "WHAT?! you died?! How- how did you huh?!??!!"
Geto: "Calm the hell down satoru.*