Can he go back to HP world? or the world just disappears? or The timeline is now skewed because Cedric just disappeared on the world? Or there is a new Cedric on this world?
Its probably where the mc possess cedric's body in that timeline and then leaves it, afterwards the original cedric would come back, probably not remembering what happened during the mc stay in his body.
y in a hurry to leave. this is a unique possible the only chance at hogwarts library and its magic and all other magical knowledge and he has to leave. the system hasn't specified a deadline. he should milk all the time he has for all the worth.
Sinc she took Pettigrew with them, how did he disappear? No one mentioned him or was concerned about him. Not even “Cedric”. Even when telling the story of how he fought a dark lord, he just described him even though he brought him back with him.